CN108852472B - Self-locking safety Veress needle - Google Patents
Self-locking safety Veress needle Download PDFInfo
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- CN108852472B CN108852472B CN201810625786.4A CN201810625786A CN108852472B CN 108852472 B CN108852472 B CN 108852472B CN 201810625786 A CN201810625786 A CN 201810625786A CN 108852472 B CN108852472 B CN 108852472B
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- tube
- locking
- puncture
- inner tube
- outer tube
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- 210000003815 abdominal wall Anatomy 0.000 claims abstract description 27
- 208000005646 Pneumoperitoneum Diseases 0.000 claims abstract description 19
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 18
- 210000000683 abdominal cavity Anatomy 0.000 claims abstract description 16
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 9
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 9
- 229920001971 elastomer Polymers 0.000 claims description 21
- 239000000806 elastomer Substances 0.000 claims description 21
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 210000000056 organ Anatomy 0.000 abstract description 10
- 210000001519 tissue Anatomy 0.000 description 11
- 230000006378 damage Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000011241 protective layer Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 210000004303 peritoneum Anatomy 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000004379 membrane Anatomy 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002357 laparoscopic surgery Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 206010033675 panniculitis Diseases 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 210000003491 skin Anatomy 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- 210000004003 subcutaneous fat Anatomy 0.000 description 1
- 210000004304 subcutaneous tissue Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
- A61B17/3474—Insufflating needles, e.g. Veress needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B2017/3454—Details of tips
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pathology (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to a self-locking safety pneumoperitoneum needle, which comprises a puncture outer tube capable of performing abdominal wall puncture, an inflation inner tube capable of filling carbon dioxide gas into the punctured abdominal cavity, and a connecting and locking mechanism capable of locking the inflation inner tube in the puncture outer tube, when the connecting and locking mechanism releases the locking state between the inflation inner tube and the puncture outer tube, the puncture outer tube is utilized to perform the required puncture operation, the inflation inner tube can be immediately locked in the puncture outer tube through the connecting locking mechanism while the puncture outer tube penetrates through the abdominal wall, and the inflation inner tube is locked in the puncture outer tube, and the inner tube air outlet hole of the head of the inflation inner tube is positioned at the outer side of the puncture tip of the puncture outer tube. The invention can effectively realize the locking between the inflation inner tube and the puncture outer tube after puncture, avoid damaging tissues or organs in the abdominal cavity after successful puncture, and is convenient to use, safe and reliable.
Description
Technical Field
The invention relates to a pneumoperitoneum needle, in particular to a self-locking safety pneumoperitoneum needle, and belongs to the technical field of medical appliances.
Background
In laparoscopic surgery, a carbon dioxide pneumoperitoneum is first established.
The current method for establishing the carbon dioxide pneumoperitoneum is to clamp the skin around the navel with a pair of forceps and lift the forceps, and then penetrate each layer of tissue of the abdominal wall by a pneumoperitoneum needle after lifting, wherein the penetrated each layer of tissue comprises skin, subcutaneous tissue, subcutaneous fat layer, subcutaneous muscle layer and peritoneum. The pneumoperitoneum needle has the advantages that the peritoneum is compact, the toughness is high, the resistance is suddenly reduced when the pneumoperitoneum needle penetrates the peritoneum, the breakthrough sense is high, the existing pneumoperitoneum needle cannot be safely self-locked when penetrating the abdominal wall, and accidents are easily caused by injuries of tissues or organs in the abdominal cavity.
The pneumoperitoneum needle has smaller puncture diameter and can not effectively realize self-locking when in use. There is an urgent need in clinic for a pneumoperitoneum needle that can self-lock the puncture tip when penetrating the abdominal wall, avoiding damage to tissues or organs in the abdominal cavity.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a self-locking safety pneumoperitoneum needle which has a compact structure, can effectively lock an inflatable inner tube and a puncture outer tube after puncture, and can avoid damage to tissues or organs in an abdominal cavity after successful puncture, and is convenient to use, safe and reliable.
According to the technical scheme provided by the invention, the self-locking safety pneumoperitoneum needle comprises a puncture outer tube capable of performing abdominal wall puncture and an inflation inner tube capable of filling carbon dioxide gas into the punctured abdominal cavity, wherein the head end of the puncture outer tube is provided with a puncture tip for puncture, the head part of the inflation inner tube is provided with an inner tube air outlet hole communicated with the inflation inner tube, the inflation inner tube is positioned in the puncture outer tube, and the inflation inner tube can reciprocate in the puncture outer tube along the length direction of the puncture outer tube by utilizing an inner tube elastomer;
The puncture device also comprises a connecting locking mechanism which can lock the inflation inner tube in the puncture outer tube, when the connecting locking mechanism is used for releasing the locking state between the inflation inner tube and the puncture outer tube, the puncture outer tube can be used for carrying out the required puncture operation, and when the puncture outer tube penetrates through the abdominal wall, the head end of the inflation inner tube pops out of the head end of the puncture outer tube, the inflation inner tube can be immediately locked in the puncture outer tube through the connecting locking mechanism, and after the inflation inner tube is locked in the puncture outer tube, an inner tube air outlet hole of the head part of the inflation inner tube is positioned in front of a puncture tip of the puncture outer tube.
Still include with aerify the gas-filled connector of inner tube tail end adaptation connection, it can with aerify the inner tube intercommunication to aerify the connector, aerify the inner tube head end and set up the soft membrane protective layer, aerify the shape of inner tube head end including spherically.
The inflation device comprises an inflation inner tube, a puncture outer tube, a puncture inner tube and a puncture outer tube, wherein the inflation inner tube is connected with the inflation inner tube in an adapting mode, the inflation inner tube is connected with the puncture outer tube, the puncture outer tube is connected with the inflation inner tube in an adapting mode, the inflation inner tube is connected with the puncture outer tube, and the inflation inner tube is connected with the puncture outer tube in an adapting mode.
The connecting and locking mechanism comprises an outer pipe connecting sleeve and an inner pipe connecting body, the outer pipe connecting sleeve is connected with the tail part of the puncture outer pipe in an adapting mode, the inner pipe connecting body is connected with the inflation inner pipe in an adapting mode, the inflation inner pipe penetrates through the outer pipe connecting sleeve and the puncture outer pipe, and the head end of the outer pipe connecting sleeve is fixedly connected with the tail end of the puncture outer pipe;
the inner pipe connecting body is provided with a connecting and positioning ring groove, the outer pipe connecting sleeve is provided with a locking head capable of being embedded in the connecting and positioning ring groove, the locking head penetrates through the outer pipe connecting sleeve and then can be embedded in the connecting and positioning ring groove, and when the locking head is embedded in the connecting and positioning ring groove, the inflatable inner pipe can be locked in the puncture outer pipe;
The locking head control mechanism can control the locking head to be positioned in the embedded state of the connecting and positioning annular groove, the locking head can be kept embedded in the connecting and positioning annular groove or separated from the connecting and positioning annular groove through the locking control mechanism, and the locking state of the inflatable inner pipe and the puncture outer pipe can be released when the locking head is separated from the connecting and positioning annular groove through the locking control mechanism.
The locking head control mechanism comprises a connecting rod pressing body hinged to the outer wall of the outer pipe connecting sleeve, the connecting rod pressing body comprises a first locking head connecting rod connected with the locking head and an unlocking pressing body connected with the first locking head connecting rod, and when the unlocking pressing body is pressed in the direction close to the outer wall of the outer pipe connecting sleeve, the locking head is separated from the connecting and positioning ring groove.
The locking head control mechanism comprises a locking head second connecting rod connected with the locking head, one end of the locking head second connecting rod is connected with the locking head, the other end of the locking head second connecting rod penetrates out of a locking connecting sleeve convexly arranged on the outer pipe connecting sleeve, a locking elastomer is further arranged in the locking connecting sleeve and sleeved on the locking head second connecting rod, and the locking elastomer is positioned between the locking head and the top end in the locking connecting sleeve.
The locking head control mechanism comprises a locking control shell capable of being sleeved on the outer pipe connecting sleeve and a control shell elastomer positioned in the locking control shell, the locking head is fixed on the inner wall of the locking control shell, the control shell elastomer is positioned between the outer wall of the outer pipe connecting sleeve and the inner wall of the locking control shell, the control shell elastomer corresponds to the locking head, and when the locking control shell is pressed to enable the control shell elastomer to be in a compressed state, the locking head can be separated from the connecting positioning ring groove.
The inner pipe connecting body is sleeved on the inflatable inner pipe, the inner pipe elastic body is compressed between the inner pipe connecting body and the plugging positioning body, the plugging positioning body is assembled in the tail end of the outer pipe connecting sleeve, and the tail end of the inflatable inner pipe penetrates out of the outer pipe connecting sleeve from the plugging positioning body.
The inner pipe connecting body is communicated with the inflatable inner pipe in the outer pipe connecting sleeve, and the tail end of the inflatable inner pipe is fixedly connected with the inner pipe connecting body;
The outer pipe connecting sleeve is further provided with an inflation connector, the inner pipe elastomer is compressed between the inflation connecting sleeve and the tail end of the inflation inner pipe, the inflation connector is communicated with the inflation inner pipe through an inner pipe connecting body, and a sealing ring is arranged at the joint of the inner pipe connector and the outer pipe connecting sleeve.
The inflatable inner tube is connected with the inflatable inner tube through a connecting sleeve, and the inflatable inner tube is connected with the inflatable inner tube through a connecting sleeve;
The inner tube elastic body is sleeved on the connecting positioning tube, the inner tube positioning body is positioned in the puncture outer tube, and the inner tube elastic body is compressed between the head end of the outer tube connecting sleeve and the tail end of the inflatable inner tube.
The puncture device has the advantages that the inflation inner tube can be immediately locked in the puncture outer tube through the connecting locking mechanism while the puncture outer tube penetrates through the abdominal wall, after the inflation inner tube is locked in the puncture outer tube, the inner tube air outlet hole of the head of the inflation inner tube is positioned at the outer side of the puncture tip of the puncture outer tube, the locking between the inflation inner tube and the puncture outer tube after puncture can be effectively realized, the damage to tissues or organs in the abdominal cavity after puncture is successful is avoided, and the puncture device is convenient to use, safe and reliable.
Drawings
Fig. 1 is a schematic diagram of a first embodiment of the present invention.
Fig. 2 is a schematic diagram of a second embodiment of the present invention.
Fig. 3 is a schematic diagram of a third embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a fourth embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a fifth embodiment of the present invention.
FIG. 6 is a schematic structural view of a punch-through indicator according to the present invention.
The reference numerals indicate that the puncture outer tube, the inflation inner tube 3, the inflation inner tube 4, the inner tube 5, the blocking positioning body 6, the connecting positioning ring groove 7, the unlocking push body 8, the inner tube 9, the locking connecting shaft 10, the locking head 11, the locking head 12, the outer tube 13, the locking connecting sleeve 14, the locking head 15, the locking head second, the locking elastic body 16, the puncture tip 17, the sealing ring 18, the connector mounting positioning body 19, the inner tube positioning ring 20, the outer tube positioning ring 21, the air storage bag 22, the air storage bag 23, the elastic body limiting block 24, the positioning connector 25, the connecting positioning tube 26, the outer tube connecting sleeve positioning head 27, the locking control shell 28, the indicating switch 29, the control shell elastic body 30, the pressing positioning body 31 and the indicating connector 32.
Detailed Description
The invention will be further described with reference to the following specific drawings and examples.
In order to effectively realize the locking between the inflation inner tube 2 and the puncture outer tube 1 after puncture and avoid damage to tissues or organs in the abdominal cavity after successful puncture, the invention comprises the puncture outer tube 1 capable of performing abdominal wall puncture and the inflation inner tube 2 capable of filling carbon dioxide gas into the abdominal cavity after puncture, wherein the head end of the puncture outer tube 1 is provided with a puncture tip 17 for puncture, the head part of the inflation inner tube 2 is provided with an inner tube air outlet hole 4 communicated with the inflation inner tube 2, the inflation inner tube 2 is positioned in the puncture outer tube 1, and the inflation inner tube 2 can reciprocate in the puncture outer tube 1 along the length direction of the puncture outer tube 1 by utilizing an inner tube elastomer 5;
The puncture needle also comprises a connection locking mechanism which can lock the inflation inner tube 2 in the puncture outer tube 1, when the connection locking mechanism is used for unlocking the locking state between the inflation inner tube 2 and the puncture outer tube 1, the puncture outer tube 1 can be used for carrying out required puncture operation, when the puncture outer tube 1 penetrates through the abdominal wall, the head end of the inflation inner tube 2 pops out of the head end of the puncture outer tube 1, the inflation inner tube 2 can be immediately locked in the puncture outer tube 1 through the connection locking mechanism, and after the inflation inner tube 2 is locked in the puncture outer tube 1, the inner tube air outlet hole 4 at the head part of the inflation inner tube 2 is positioned in front of the puncture tip 17 of the puncture outer tube 1.
Specifically, the puncture outer tube 1, the inflation inner tube 2 and the connection locking mechanism are all made of materials meeting medical standards, the puncture tip 17 at the head end of the puncture outer tube 1 can be used for puncturing the abdominal wall, the puncture tip 17 can be formed by beveling the head end of the puncture outer tube 1, namely, the puncture outer tube 1 is in a wedge shape, and the puncture tip 17 can be formed by using the wedge shape. The inflation inner tube 2 is positioned in the puncture outer tube 1, the inflation inner tube 2 and the puncture outer tube 1 are coaxially distributed, the inflation inner tube 2 and the puncture outer tube 1 are in clearance fit, and the inflation inner tube 2 can reciprocate in the puncture outer tube 1 through the inner tube elastomer 5.
During puncturing, the inflatable inner tube 2 is positioned in the puncturing outer tube 1, namely, the puncturing tip 17 at the head end of the puncturing outer tube 1 is in an exposed state, and the puncturing tip 17 can be utilized to perform the required abdominal wall puncturing. After the puncture tip 17 of the puncture outer tube 1 is penetrated, carbon dioxide gas needs to be injected into the abdominal cavity by using the inflatable inner tube 2, and when the carbon dioxide gas is injected, the inner tube air outlet hole 4 of the inflatable inner tube 2 needs to be in an exposed state, namely, the inflatable inner tube 2 reciprocates in the puncture outer tube 1 by using the inner tube elastomer 5, so that the whole puncture and inflation requirements are met.
In practice, there are cases where tissues or organs in the abdominal cavity are damaged while penetrating the abdominal wall with the piercing tip 17 of the piercing outer tube 1. Generally, the outer diameter of the puncture outer tube 1 is 2mm, and the puncture outer tube 1 and the inflatable inner tube 2 have relatively thin tube diameters, so that the damage of the puncture outer tube 1 to tissues or organs in the abdominal cavity cannot be completely avoided in the prior art.
In order to solve the above problems, the present invention can lock the inflatable inner tube 2 in the puncture outer tube 1 by using the connection locking mechanism, when the inflatable inner tube 2 is locked in the puncture outer tube 1, the head end of the inflatable inner tube 2 is located at the outer side of the puncture tip 17 at the head end of the puncture outer tube 1, and the inner tube air outlet hole 4 of the inflatable inner tube 2 is in an exposed state, wherein the exposed state means that the puncture outer tube 1 does not shade the inner tube air outlet hole 4 of the inflatable inner tube 2, and the inflatable inner tube 2 cannot be influenced to inflate the abdominal cavity through the inner tube air outlet hole 4. When the head end of the inflation inner tube 2 is positioned outside the puncture tip 17 at the head end of the puncture outer tube 1, the head end of the inflation inner tube 2 can be utilized to avoid damage to tissues or organs in the abdominal cavity caused by contact of the puncture tip 17.
When the connecting and locking mechanism is not used for locking the inflatable inner tube 2 in the puncture outer tube 1, the puncture tip 17 of the puncture outer tube 1 can be used for puncturing the abdominal wall, the connecting and locking mechanism can be used for immediately locking the inflatable inner tube 2 in the puncture outer tube 1 when the puncture outer tube 1 penetrates the abdominal wall, after the inflatable inner tube 2 is locked in the puncture outer tube 1, the head end of the inflatable inner tube 2 can be stabilized outside the puncture tip 17 at the head end of the puncture outer tube 1, and the blunt head of the inflatable inner tube 2 can be used for protecting organs or tissues in the abdominal cavity.
Further, still include with aerify the air connector 3 of inner tube 2 tail end adaptation connection, the air connector 3 can be with aerify inner tube 2 intercommunication, aerify inner tube 2 head end and set up the soft membrane protective layer, aerify the shape of inner tube 2 head end and include spherically.
In the embodiment of the present invention, the inflation connector 3 can be communicated with the inflation inner tube 2, and the inflation connector 3 can be connected with external inflation equipment, and the shape of the head end of the inflation inner tube 2 comprises a sphere, however, other blunt shapes can be adopted. Of course, after the soft film protective layer is arranged at the head end of the inflatable inner tube 2, the protective effect can be further improved by utilizing the soft film protective layer, and the soft film protective layer can be made of medical flexible materials and the like. Generally, the head end of the inner inflation tube 2 is in a closed state, and carbon dioxide gas entering the inner inflation tube 2 can only be discharged through the inner tube outlet hole 4 at the head end of the inner inflation tube 2.
As shown in fig. 6, the device also comprises a through indicator which can be connected with the inflatable inner tube 2 in an adapting way, wherein the through indicator comprises a gas storage bag 22 for storing gas and a gas storage bag connecting tube 23 which is connected and communicated with the gas storage bag 22, the gas storage bag 22 can be communicated with the inflatable inner tube 2 through the gas storage bag connecting tube 23, and after the puncture outer tube 1 penetrates through the abdominal wall, the gas in the gas storage bag connecting tube 23 can be discharged through an inner tube gas outlet hole 4 at the head part of the inflatable inner tube 2.
In the embodiment of the invention, one end of the gas storage bag connecting pipe 23 is connected with the gas storage bag 22, the other end of the gas storage bag connecting pipe 23 is provided with the indication connector 32, and the gas storage bag connecting pipe can be connected with the inflation connector 3 in an adaptive manner through the indication connector 32. The gas storage bag 22 is capable of storing gas, and when the gas storage bag 22 stores gas, the gas storage bag 22 is in an inflated state, and when the gas in the gas storage bag 22 is reduced or completely released, the gas storage bag 22 is in a deflated state. After the puncture outer tube 1 penetrates through the abdominal wall, the gas in the gas storage bag 22 can be discharged through the inner tube gas outlet hole 4. I.e. before the puncture outer tube 1 passes through the abdominal wall, the air storage bag 22 is in an inflated state, and after the puncture outer tube 1 passes through the abdominal wall, the air storage bag 22 is in a deflated state, so that whether the puncture outer tube 1 passes through the abdominal wall or not can be indicated according to the state of the air storage bag 22. In the specific implementation, the gas storage bag connecting pipe 23 can be further provided with an indication switch 29, and the communication state between the indication connector 32 and the gas storage bag 22 can be controlled through the indication switch 29, so that when the through indication judgment is needed, the gas in the gas storage bag 22 is allowed to enter the gas filling inner pipe 2 through the gas storage bag connecting pipe 23 and the gas filling connector 3.
Further, the connection locking mechanism comprises an outer tube connecting sleeve 13 which is connected with the tail part of the puncture outer tube 1 in an adapting way and an inner tube connecting body 9 which is connected with the inflatable inner tube 2 in an adapting way, the inner tube connecting body 9 is positioned in the outer tube connecting sleeve 13, the inflatable inner tube 2 penetrates through the outer tube connecting sleeve 13 and the puncture outer tube 1, and the head end of the outer tube connecting sleeve 13 is fixedly connected with the tail end of the puncture outer tube 1;
The inner pipe connecting body 9 is provided with a connecting and positioning annular groove 7, the outer pipe connecting sleeve 13 is provided with a locking head 12 which can be embedded in the connecting and positioning annular groove 7, the locking head 12 passes through the outer pipe connecting sleeve 13 and can be embedded in the connecting and positioning annular groove 7, and when the locking head 12 is embedded in the connecting and positioning annular groove 7, the inflatable inner pipe 2 can be locked in the puncture outer pipe 1;
The device also comprises a locking head control mechanism which can control the locking head 12 to be positioned in the embedded state of the connecting and positioning annular groove 7, wherein the locking head 12 can be kept embedded in the connecting and positioning annular groove 7 or the locking head 12 is separated from the connecting and positioning annular groove 7 through the locking control mechanism, and the locking state of the inflatable inner tube 2 and the puncture outer tube 1 can be released when the locking head 12 is separated from the connecting and positioning annular groove 7 through the locking control mechanism.
In the embodiment of the invention, the head end of the outer tube connecting sleeve 13 is fixedly connected with the tail end of the puncture outer tube 1, the inner tube connecting head 9 is connected with the inflatable inner tube 2 in an adapting way, the inner tube connecting body 9 is positioned in the outer tube connecting sleeve 13, the inner tube connecting head 9 can synchronously move along with the inflatable inner tube 2, the outer tube connecting sleeve 13 and the puncture outer tube 1 are coaxially distributed, the inner tube connecting body 9 and the outer tube connecting sleeve 13 are coaxially distributed, the inflatable inner tube 2 penetrates through the outer tube connecting sleeve 13 and the puncture outer tube 1, and the inner tube connecting body 9 can move along with the inflatable inner tube 2 in the outer tube connecting sleeve 13.
The connecting and positioning ring groove 7 is arranged on the inner pipe connecting body 9, the connecting and positioning ring groove 7 surrounds the axis of the inner pipe connecting body 9, the shape and the like of the locking head 12 are matched with the connecting and positioning ring groove 7, the locking head 12 penetrates through the outer pipe connecting sleeve 13 and can be embedded in the connecting and positioning ring groove 7, the axis of the locking head 12 is mutually perpendicular to the axis of the puncture outer pipe 1 and the axis of the inflation inner pipe 2, and therefore when the locking head 12 is embedded in the connecting and positioning ring groove 7, the inflation inner pipe 2 can be locked in the puncture outer pipe 1.
The locking head 12 can be kept embedded in the connecting and positioning ring groove 7 or the locking head 12 is separated from the connecting and positioning ring groove 7 by the locking head control mechanism, so that the normal puncture requirement and the self-locking protection of the whole pneumoperitoneum needle can be met.
The specific structure of the lock head control mechanism and the engagement with the lock head 12 will be described in detail with reference to fig. 1 to 5.
As shown in fig. 1, the locking head control mechanism comprises a connecting rod pressing body hinged on the outer wall of the outer tube connecting sleeve 13, the connecting rod pressing body comprises a locking head first connecting rod 11 connected with the locking head 12 and an unlocking pressing body 8 connected with the locking head first connecting rod 11, and when the unlocking pressing body 8 is pressed in the direction approaching to the outer wall of the outer tube connecting sleeve 13, the locking head 12 can be separated from the connecting and positioning ring groove 7.
In the embodiment of the invention, the L-shaped locking head first connecting rod 11 and the L-shaped locking head 12 are arranged, the connecting rod pressing body is hinged with the outer pipe connecting sleeve 13 through the locking connecting shaft 10, when the unlocking pressing body 8 is pressed towards the direction close to the outer wall of the outer pipe connecting sleeve 13, the locking head 12 can be separated from the connecting and positioning annular groove 7 through the locking head first connecting rod 11, and after the locking head 12 is separated from the connecting and positioning annular groove 7, the inflatable inner pipe 2 can move in the puncture outer pipe 1, namely, the puncture tip 17 of the puncture outer pipe 1 can be utilized for puncture. Generally, the head end of the inflation inner tube 2 will enter the puncture outer tube 1 before the locking head 12 is separated from the connecting and positioning ring groove 7 and before the puncture is to be performed, so as to avoid shielding the puncture tip 17 by the head end of the inflation inner tube 2. After the head end of the inflation inner tube 2 enters the puncture outer tube 1, the connecting and positioning ring groove 7 and the locking head 12 are mutually far away. When the puncture outer tube 1 penetrates through the abdominal wall by utilizing the puncture tip 17, the inner tube elastomer 5 can push the inflation inner tube 2 to move, so that the head end of the inflation inner tube 2 is positioned outside the puncture tip 17 of the puncture outer tube 1, and the locking head 12 can be embedded into the connecting and positioning ring groove 7 again in the movement process of the inflation inner tube 2, so that the inflation inner tube 2 is locked in the puncture outer tube 1. When the unlocking pressing body 8 is pressed without external force, the locking head 12 is continuously and stably embedded in the connecting and positioning ring groove 7, so that the inflatable inner tube 2 is ensured to be stably and reliably locked in the puncture outer tube 1.
In addition, the inner pipe connecting body 9 is sleeved on the inflatable inner pipe 2, the inner pipe elastic body 5 is compressed between the inner pipe connecting body 9 and the plugging positioning body 6, the plugging positioning body 6 is assembled in the tail end of the outer pipe connecting sleeve 13, and the tail end of the inflatable inner pipe 2 penetrates out of the outer pipe connecting sleeve 13 from the plugging positioning body 6.
In the embodiment of the invention, the inner tube elastic body 5 can adopt a spring or other elastic components, the inner tube elastic body 5 is sleeved on the inflatable inner tube 2, the inner tube elastic body 5 is positioned between the end part of the inner tube connecting body 9, which is close to the plugging positioning body 6, and the plugging positioning body 6 is positioned at the tail end of the outer tube connecting sleeve 13, the positioning of the inflatable inner tube 2 and the inner tube elastic body 5 can be realized by using the plugging positioning body 6, and the tail end of the inflatable inner tube 2, which penetrates out of the outer tube connecting sleeve 13, is connected with the inflatable connector 3. The locking head 12 is located between the tail end of the outer tube connection sleeve 13 and the head end of the outer tube connection sleeve 13. In the concrete implementation, the shape of the inner pipe connecting body 9 is matched with the shape of the outer pipe connecting sleeve 13, and when the locking head 12 is embedded in the connecting and positioning ring groove 7, the inner pipe connecting sleeve 13 and the inner pipe connecting body 9 can also be used for limiting the movement of the inner pipe connecting body 9 and the inflatable inner pipe 2.
As shown in fig. 2, 3 and 4, the locking head control mechanism comprises a locking head second connecting rod 15 connected with the locking head 12, one end of the locking head second connecting rod 15 is connected with the locking head 12, the other end of the locking head second connecting rod 15 penetrates out of a locking connecting sleeve 14 protruding out of an outer tube connecting sleeve 13, a locking elastic body 16 is further arranged in the locking connecting sleeve 14, the locking elastic body 16 is sleeved on the locking head second connecting rod 15, and the locking elastic body 16 is positioned between the locking head 12 and the top end in the locking connecting sleeve 14.
In the embodiment of the invention, the second connecting rod 15 of the locking head and the locking head 12 are coaxially distributed, and the length direction of the locking head 12 is mutually perpendicular to the length direction of the puncture outer tube 1 and the length direction of the inflation inner tube 2. The locking elastic body 16 can be made of a spring or other elastic components, the locking connecting sleeve 14 is convexly arranged on the outer tube connecting sleeve 13, the second connecting rod 15 of the locking head penetrates out of the locking connecting sleeve 14, and a space for accommodating the locking elastic body 16 can be formed through the locking connecting sleeve 14.
In specific implementation, under the action of the locking elastic body 16, the locking head 12 can be stably embedded in the connecting and positioning ring groove 7, when the locking state is needed to be contacted, the end part of the locking head second connecting rod 15 outside the locking connecting sleeve 14 is needed to be pulled, the locking elastic body 16 can be in a compressed state in the process of pulling the locking head second connecting rod 15, when the locking head 12 is separated from the connecting and positioning ring groove 7 and the puncture outer tube 1 is punctured, the head end of the inflation inner tube 2 enters the puncture outer tube 1, at the moment, the connecting and positioning ring groove 7 and the locking head 12 are mutually far away, and when the puncture outer tube 1 is punctured through the abdominal wall, the connecting and positioning ring groove 7 is close to the locking head 12, and under the action of the locking elastic body 16, the locking head 12 can be quickly embedded in the connecting and positioning ring groove 7, so that the inflation inner tube 2 is locked in the puncture outer tube 1. When the locking head second connecting rod 15 is pulled to separate the locking head 12 from the connecting and positioning ring groove 7, and the head end of the inflation inner tube 2 enters the puncture outer tube 1, the action loaded on the locking head second connecting rod 15 is removed, and when the inflation inner tube 2 moves in the puncture outer tube 1 and the connecting and positioning ring groove 7 and the locking head 12 are close to each other, the locking and embedding of the locking head 12 in the connecting and positioning ring groove 7 can be realized only by utilizing the acting force of the locking elastomer 16.
For the implementation in fig. 2, the fitting structure of the inner tube elastic body 5 and the inflation inner tube 2 may be described with reference to the specific fitting of the inner tube elastic body 5 and the inflation inner tube 2 in fig. 1.
For the implementation case in fig. 3, the inner tube connecting body 9 is communicated with the inflatable inner tube 2 in the outer tube connecting sleeve 13, and the tail end of the inflatable inner tube 2 is fixedly connected with the inner tube connecting body 9;
The outer pipe connecting sleeve 13 is further provided with an inflation connector 3, the inner pipe elastic body 5 is compressed between the inflation connecting sleeve 3 and the tail end of the inflation inner pipe 2, the inflation connector 3 is communicated with the inflation inner pipe 2 through the inner pipe connecting body 9, and a sealing ring 18 is arranged at the joint part of the inner pipe connector 9 and the outer pipe connecting sleeve 13.
In the embodiment of the invention, the inflatable connector 13 is arranged at the tail end of the outer tube connecting sleeve 13 through the connector mounting positioning body 19, the head end of the outer tube connecting sleeve 13 is provided with the outer tube positioning ring 21 matched with the puncture outer tube 1, and the inner tube positioning ring 20 matched with the tail end of the inflatable inner tube 2 is also arranged in the inner tube connecting body 9. The two ends of the inner tube elastic body 5 are distributed and connected with the inflatable connector 3 and the inner tube positioning ring 20, and the inner tube elastic body 5 can provide acting force for the movement of the inflatable inner tube 2, so that the inflatable inner tube 2 can be pushed to move when the puncture outer tube 1 penetrates through the abdominal wall, and the head end of the inflatable inner tube 2 is positioned outside the puncture tip 17 of the puncture outer tube 1. Of course, the locking head 12 can be embedded in the connecting and positioning ring groove 7 during the process of pushing the inflatable inner tube 2 by the inner tube elastomer 5.
For the implementation case in fig. 4, the inflatable inner tube 2 further comprises a connecting positioning tube 26 connected and communicated with the inflatable inner tube 2, wherein the connecting positioning tube 26 can penetrate through the outer tube connecting sleeve 13, and the inner tube connecting body 9 is sleeved on the connecting positioning tube 26;
The inner tube elastic body 5 is sleeved on the connecting positioning tube 26, the inner tube positioning body 5 is positioned in the puncture outer tube 1, and the inner tube elastic body 5 is compressed between the head end of the outer tube connecting sleeve 13 and the tail end of the inflatable inner tube 2.
In the embodiment of the invention, the inflatable inner tube 2 is connected with the inflatable connector 3 through the connecting and positioning tube 26, the connecting and positioning tube 26 and the inflatable inner tube 2 are coaxially distributed, the head end of the connecting and positioning tube 26 is fixedly connected with the tail end of the inflatable inner tube 2 through the positioning connector 25, and an elastomer limiting block 24 is arranged outside the tail end of the inflatable inner tube 2. When the head end of the outer tube connecting sleeve 13 is matched with the puncture outer tube 1, an outer tube connecting sleeve positioning head 27 is formed at the head end of the outer tube connecting sleeve 13, the inner tube elastic body 5 is sleeved on the connecting positioning tube 26, and the inner tube elastic body 5 is positioned between the outer tube connecting sleeve positioning head 27 and the elastic body limiting block 24.
Of course, the connecting positioning tube 26 and the inner tube connecting body 9 may be integrally formed with the inflation inner tube 2, and may be specifically selected as required. The specific process of cooperation between the inner tube elastic body 5 and the inflatable inner tube 2 can be referred to the above description, and will not be repeated here.
As shown in fig. 5, the locking head control mechanism comprises a locking control shell 28 capable of being sleeved on the outer pipe connecting sleeve 13 and a control shell elastic body 30 positioned in the locking control shell 28, the locking head 12 is fixed on the inner wall of the locking control shell 28, the control shell elastic body 30 is positioned between the outer wall of the outer pipe connecting sleeve 13 and the inner wall of the locking control shell 28, the control shell elastic body 30 corresponds to the locking head 12, and the locking head 12 can be separated from the connecting positioning ring groove 7 when the locking control shell 28 is pressed so that the control shell elastic body 30 is in a compressed state.
In the embodiment of the present invention, the locking control housing 28 can be sleeved on the outer tube connecting sleeve 13, the locking head 12 and the control housing elastic body 30 are distributed at two opposite ends of the locking control housing 28, the control housing elastic body 30 can be made of a spring or other elastic components, and generally, a pressing positioning body 31 is arranged on the locking control housing 28, and the pressing positioning body 31 is arranged on the outer wall of the locking control housing 28 and corresponds to the control housing elastic body 30. When the stable retainer 31 is pushed to move the lock control housing 28, the lock head 12 can be separated from the connecting retainer ring groove 7, and the control housing elastic body 30 can be placed in a compressed state. As is clear from the above description, when the locking head 12 is separated from the connecting and positioning ring groove 7 and the head end of the inflation inner tube 2 enters the puncture outer tube 1, the force applied to the pressing and positioning body 31 can be removed. When the puncture outer tube 1 penetrates through the abdominal wall and the connecting positioning ring groove 7 and the locking head 12 are close to each other, the locking head 12 can be embedded in the connecting positioning ring groove 7 again under the action of the control shell elastomer 30, so that the inflation inner tube 2 is diluted in the puncture outer tube 1.
When the locking head control mechanism adopts the above structure, the specific matching between the inner tube elastic body 5 and the inner tube connecting body 9 and between the inner tube 2 can be described with reference to the matching process between the inner tube elastic body 5 and the inner tube 2 in fig. 1, and the description is omitted here. Of course, in the specific implementation, other embodiments of the locking head control mechanism may be adopted, so long as the requirement of controlling the locking head 12 to cooperate with the connecting and positioning ring groove 7 can be met, and the description is not repeated here.
Claims (4)
1. The utility model provides a dead safe pneumoperitoneum needle of auto-lock, includes puncture outer tube (1) that can carry out abdominal wall puncture and can charge into the inflatable inner tube (2) of carbon dioxide gas in the abdominal cavity after the puncture, and the head end of puncture outer tube (1) sets up puncture point (17) that puncture was used, the head setting of inflatable inner tube (2) with the inner tube venthole (4) of inflatable inner tube (2) intercommunication, inflatable inner tube (2) are located puncture outer tube (1), and inflatable inner tube (2) utilize inner tube elastomer (5) can follow in puncture outer tube (1) length direction reciprocating motion of puncture outer tube (1), characterized by:
the puncture needle also comprises a connection locking mechanism which can lock the inflation inner tube (2) in the puncture outer tube (1), when the connection locking mechanism is used for unlocking the state between the inflation inner tube (2) and the puncture outer tube (1), the puncture outer tube (1) can be used for performing required puncture operation, when the puncture outer tube (1) penetrates through the abdominal wall, the head part of the inflation inner tube (2) pops out of the head end of the puncture outer tube (1), the inflation inner tube (2) can be immediately locked in the puncture outer tube (1) through the connection locking mechanism, and after the inflation inner tube (2) is locked in the puncture outer tube (1), an inner tube air outlet hole (4) at the head part of the inflation inner tube (2) is positioned in front of a puncture tip (17) of the puncture outer tube (1);
The inflation device further comprises a through indicator which can be connected with the inflation inner tube (2) in an adapting way, wherein the through indicator comprises a gas storage bag (22) for storing gas and a gas storage bag connecting tube (23) which is connected and communicated with the gas storage bag (22), the gas storage bag (22) can be communicated with the inflation inner tube (2) through the gas storage bag connecting tube (23), and after the puncture outer tube (1) penetrates through the abdominal wall, the gas in the gas storage bag connecting tube (23) can be discharged through an inner tube outlet hole (4) at the head part of the inflation inner tube (2);
The connecting and locking mechanism comprises an outer pipe connecting sleeve (13) which is connected with the tail part of the puncture outer pipe (1) in an adapting way and an inner pipe connecting body (9) which is connected with the inflatable inner pipe (2) in an adapting way, the inner pipe connecting body (9) is positioned in the outer pipe connecting sleeve (13), the inflatable inner pipe (2) penetrates through the outer pipe connecting sleeve (13) and the puncture outer pipe (1), and the head end of the outer pipe connecting sleeve (13) is fixedly connected with the tail end of the puncture outer pipe (1);
The inner pipe connecting body (9) is provided with a connecting and positioning ring groove (7), the outer pipe connecting sleeve (13) is provided with a locking head (12) which can be embedded in the connecting and positioning ring groove (7), the locking head (12) can be embedded in the connecting and positioning ring groove (7) after penetrating through the outer pipe connecting sleeve (13), and when the locking head (12) is embedded in the connecting and positioning ring groove (7), the inflatable inner pipe (2) can be locked in the puncture outer pipe (1);
the device also comprises a locking head control mechanism which can control the locking head (12) to be positioned in the connecting and positioning ring groove (7), wherein the locking head (12) can be kept to be embedded in the connecting and positioning ring groove (7) or separated from the connecting and positioning ring groove (7) through the locking control mechanism, and the locking state of the inflatable inner tube (2) and the puncture outer tube (1) can be released when the locking head (12) is separated from the connecting and positioning ring groove (7) through the locking control mechanism;
the inflatable inner tube is characterized by further comprising an inflatable connector (3) which is connected with the tail end of the inflatable inner tube (2) in an adapting way, wherein the inflatable connector (3) can be communicated with the inflatable inner tube (2), a soft film protection layer is arranged on the head of the inflatable inner tube (2), and the shape of the head of the inflatable inner tube (2) comprises a sphere;
the inner pipe connecting body (9) is sleeved on the inflatable inner pipe (2), the inner pipe elastic body (5) is compressed between the inner pipe connecting body (9) and the plugging positioning body (6), the plugging positioning body (6) is assembled in the tail end of the outer pipe connecting sleeve (13), and the tail end of the inflatable inner pipe (2) penetrates out of the outer pipe connecting sleeve (13) from the plugging positioning body (6);
the inner pipe connecting body (9) is communicated with the inflatable inner pipe (2) in the outer pipe connecting sleeve (13), and the tail end of the inflatable inner pipe (2) is fixedly connected with the inner pipe connecting body (9);
An inflation connector (3) is further arranged on the outer pipe connecting sleeve (13), the inner pipe elastomer (5) is compressed between the inflation connector (3) and the tail end of the inflation inner pipe (2), the inflation connector (3) is communicated with the inflation inner pipe (2) through an inner pipe connecting body (9), and a sealing ring (18) is arranged at the joint part of the inner pipe connecting body (9) and the outer pipe connecting sleeve (13);
the inflatable inner tube comprises an inflatable inner tube (2) and is characterized by further comprising a connecting positioning tube (26) which is connected and communicated with the inflatable inner tube (2), wherein the connecting positioning tube (26) can penetrate through an outer tube connecting sleeve (13), and an inner tube connecting body (9) is sleeved on the connecting positioning tube (26);
The inner tube elastic body (5) is sleeved on the connecting positioning tube (26), the inner tube elastic body (5) is positioned in the puncture outer tube (1), and the inner tube elastic body (5) is compressed between the head end of the outer tube connecting sleeve (13) and the tail end of the inflatable inner tube (2).
2. The self-locking safety pneumoperitoneum needle according to claim 1, wherein the locking head control mechanism comprises a connecting rod pressing body hinged on the outer wall of the outer tube connecting sleeve (13), the connecting rod pressing body comprises a locking head first connecting rod (11) connected with the locking head (12) and an unlocking pressing body (8) connected with the locking head first connecting rod (11), and when the unlocking pressing body (8) is pressed in a direction approaching to the outer wall of the outer tube connecting sleeve (13), the locking head (12) can be separated from the connecting positioning ring groove (7).
3. The self-locking safety pneumoperitoneum needle according to claim 1, wherein the locking head control mechanism comprises a locking head second connecting rod (15) connected with the locking head (12), one end of the locking head second connecting rod (15) is connected with the locking head (12), the other end of the locking head second connecting rod (15) penetrates out of a locking connecting sleeve (14) convexly arranged on the outer tube connecting sleeve (13), a locking elastomer (16) is further arranged in the locking connecting sleeve (14), the locking elastomer (16) is sleeved on the locking head second connecting rod (15), and the locking elastomer (16) is positioned between the locking head (12) and the top end in the locking connecting sleeve (14).
4. The self-locking safety pneumoperitoneum needle according to claim 1, wherein the locking head control mechanism comprises a locking control shell (28) capable of being sleeved on the outer tube connecting sleeve (13) and a control shell elastic body (30) positioned in the locking control shell (28), the locking head (12) is fixed on the inner wall of the locking control shell (28), the control shell elastic body (30) is positioned between the outer wall of the outer tube connecting sleeve (13) and the inner wall of the locking control shell (28), the control shell elastic body (30) corresponds to the locking head (12), and the locking head (12) can be separated from the connecting positioning ring groove (7) when the control shell elastic body (30) is in a compressed state by pressing the locking control shell (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810625786.4A CN108852472B (en) | 2018-06-18 | 2018-06-18 | Self-locking safety Veress needle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810625786.4A CN108852472B (en) | 2018-06-18 | 2018-06-18 | Self-locking safety Veress needle |
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| Publication Number | Publication Date |
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| CN108852472A CN108852472A (en) | 2018-11-23 |
| CN108852472B true CN108852472B (en) | 2025-01-28 |
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| CN201810625786.4A Active CN108852472B (en) | 2018-06-18 | 2018-06-18 | Self-locking safety Veress needle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111772741A (en) * | 2020-07-07 | 2020-10-16 | 无锡圣诺亚科技有限公司 | Safety pneumoperitoneum needle capable of self-locking |
| CN113827325A (en) * | 2021-11-29 | 2021-12-24 | 杭州圣轩实业有限公司 | Puncture sampler for oncology department |
| CN114469321B (en) * | 2022-01-14 | 2022-08-16 | 成都鑫云解码科技有限公司 | Auxiliary smoke exhaust and drainage device for single-port laparoscopic surgery |
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| CN107072688A (en) * | 2014-09-18 | 2017-08-18 | 阿普锐欧医学股份公司 | Medical treatment device |
| CN111772741A (en) * | 2020-07-07 | 2020-10-16 | 无锡圣诺亚科技有限公司 | Safety pneumoperitoneum needle capable of self-locking |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6837878B2 (en) * | 2001-01-09 | 2005-01-04 | Icu Medical, Inc. | Bluntable needle assembly with open-ended blunting probe |
| US6837872B2 (en) * | 2002-05-02 | 2005-01-04 | Becton, Dickinson And Company | Needle holder for use with safety needle assembly |
| CN107898491B (en) * | 2017-12-13 | 2023-11-24 | 无锡华纳医疗科技有限公司 | Safety puncture core |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107072688A (en) * | 2014-09-18 | 2017-08-18 | 阿普锐欧医学股份公司 | Medical treatment device |
| CN111772741A (en) * | 2020-07-07 | 2020-10-16 | 无锡圣诺亚科技有限公司 | Safety pneumoperitoneum needle capable of self-locking |
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