CN222899226U - A puncture assembly and a hemostatic device for laparoscopic surgery - Google Patents
A puncture assembly and a hemostatic device for laparoscopic surgery Download PDFInfo
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- CN222899226U CN222899226U CN202421500767.6U CN202421500767U CN222899226U CN 222899226 U CN222899226 U CN 222899226U CN 202421500767 U CN202421500767 U CN 202421500767U CN 222899226 U CN222899226 U CN 222899226U
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Abstract
The utility model provides a puncture assembly and a hemostasis device for laparoscopic surgery, wherein the puncture assembly comprises a puncture outfit and an external sleeve, the puncture outfit is provided with a channel extending along the axial direction of the puncture outfit, the external sleeve is inserted into the channel in an installation state of the puncture assembly, the external sleeve is in friction fit with the channel, the external sleeve is fixed in the channel, and a passage in the external sleeve is used for surgical instruments to pass in and out of an abdominal cavity from outside. Solves the technical problem of the traction of the blood vessel caused by the cooperation of the hemostatic forceps and the puncture outfit.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a puncture assembly and a hemostatic device for laparoscopic surgery.
Background
To fully expose the surgical field during surgery, ligations of blood vessels around the target tissue are required to prevent bleeding. Hemostasis has become one of the cores of the basic surgical techniques, and surgical procedures on any part of the human body involve, almost without exception, bleeding and hemostasis, typically using hemostat ligature clips to close the hemostasis.
As shown in fig. 1, a hemostatic forceps for clinical application now generally includes a handle 1 and a shaft assembly 2 arranged in sequence from near to far, an adapter 11 is formed at an upper end of the handle 1, and a proximal end of the shaft assembly 2 is connected to a distal end of the adapter 11. The shaft assembly 2 includes a sleeve 21 extending in a proximal-distal direction and jaws 22 at a distal end of the sleeve 21, and the adapter 11 can actuate the sleeve 21 to move distally to squeeze the jaws 22 to snap the ligating clip within the jaws 22.
When the hemostat is used for laparoscopic surgery, the cannula 21 needs to be inserted into the puncture outfit 3 to locate the distal end of the shaft assembly 2 (including the jaws 22) within the human body to perform a hemostatic operation on the blood vessel. The puncture outfit 3 is fixed on the patient's body, the sleeve 21 inserts the puncture outfit 3, there is great friction force cooperation structure between sleeve 21 and the puncture outfit 3, in the in-process that the hemostat was launched (i.e. the in-process that adapter 11 drove sleeve 21 to the distal movement), because great friction force between sleeve 21 and the puncture outfit 3 can cause the hemostat main part (including keeping silent) to retreat to make sleeve 21 and hemostat main part relative movement, ligature clamp can cause the pulling to the blood vessel when the lock blood vessel like this, tear the blood vessel easily.
Disclosure of utility model
First, the technical problem to be solved
In view of the technical problem of traction on blood vessels in the process of matching the hemostatic forceps and the puncture outfit, the utility model solves the problem at least to a certain extent. To this end, the present utility model proposes a puncture assembly and a hemostatic device for laparoscopic surgery.
(II) technical scheme
In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps:
In a first aspect, the utility model provides a puncture assembly comprising a puncture outfit and an external cannula, wherein the puncture outfit is provided with a channel extending along the axial direction of the puncture outfit, the external cannula is inserted into the channel in an installation state of the puncture assembly, the external cannula is in friction fit with the channel, so that the external cannula is fixed in the channel, a passage in the external cannula is used for a surgical instrument to enter and exit from an abdominal cavity from outside, and the external cannula completely covers the channel in the length direction.
Optionally, the puncture device comprises a support and a catheter which are sequentially connected, the catheter is used for being inserted into the abdominal cavity from outside, the support is used for providing support for the catheter from outside, the external sleeve is provided with a first end and a second end which are opposite, the first end of the external sleeve extends out of the support distally in the installation state, and the second end of the external sleeve extends out of the support proximally.
Optionally, the first end of the outer cannula extends distally beyond the cannula.
Optionally, a stop is provided on the outer wall of the second end of the outer cannula, and in the installed state, the stop abuts the proximal end of the abutment.
Optionally, a flange structure turned to the outside of the external sleeve is arranged at the second end part of the external sleeve along the circumferential direction of the external sleeve.
Optionally, a plurality of elastically deformable membrane flaps are arranged on the inner wall of the channel along the circumferential direction of the channel, the membrane flaps surround the center of the channel to form a through hole, the radial dimension of the through hole formed by the membrane flaps (34) in a free state is smaller than that of the external sleeve, the external sleeve penetrates through the through hole in the installation state of the puncture assembly, and each membrane flap is elastically deformed and is clung to the outer wall of the external sleeve.
Optionally, the membrane flap is trapezoidal, the membrane flap has a first end connected with the inner wall of the channel and a second end far away from the inner wall of the channel, the first end of the membrane flap is a wide portion of the trapezoid, and the second end of the membrane flap is a narrow portion of the trapezoid.
Optionally, the plurality of petals are evenly distributed along the channel circumference.
In a second aspect, the utility model provides a hemostatic device for laparoscopic surgery comprising a puncture assembly as described above and a hemostatic forceps having a cannula for clamping the jaws, the cannula of the hemostatic forceps being inserted into the puncture device through an internal passageway of an external cannula in an installed state, the external cannula being in clearance fit with the cannula of the hemostatic forceps.
Optionally, the external cannula has an inner diameter 0.4-1 mm greater than the outer diameter of the hemostatic forceps cannula.
(III) beneficial effects
The beneficial effects of the utility model are as follows:
When the puncture assembly is used for matched with the hemostatic forceps in laparoscopic surgery, the distal end of the hemostatic forceps shaft assembly is inserted into the puncture outfit through the internal passage of the external sleeve, the sleeve used for clamping the jaw on the hemostatic forceps is not contacted with the inner wall of the puncture outfit channel, so that the sleeve of the hemostatic forceps is prevented from being matched with the puncture outfit channel to generate larger friction force, the adapter drives the sleeve to move distally to squeeze the two opposite sides of the jaw to buckle the ligature clamp in the process of firing the hemostatic forceps, the shaft assembly cannot be retracted in the process of firing, and further the vascular pulling and tearing caused by the ligature clamp when the vascular buckling are avoided.
Drawings
The utility model is described with the aid of the following figures:
fig. 1 is a schematic view of a hemostatic forceps according to the background of the utility model;
FIG. 2 is a schematic view showing a puncture assembly according to embodiment 1 of the present utility model in an uninstalled state, wherein the puncture instrument and the external cannula are separately provided;
FIG. 3 is a schematic view showing the structure of the puncture assembly according to embodiment 1 of the present utility model in an installed state, wherein an external cannula is inserted into a passage of a puncture outfit;
Fig. 4 is a schematic view showing the structure of a plurality of petals provided on a support according to embodiment 2 of the present utility model;
Fig. 5 is a schematic structural view of a hemostatic device according to embodiment 3 of the present utility model in an uninstalled state, wherein the puncture outfit, the external cannula and the hemostatic forceps are separately provided;
Fig. 6 is a schematic structural view showing a hemostatic device according to embodiment 3 of the present utility model in an installed state, in which an external cannula is inserted into a passage of a puncture outfit, and a cannula of a hemostatic forceps is inserted into the puncture outfit through an internal passage of the external cannula.
[ Reference numerals description ]
1, A handle;
an adapter;
2, a shaft assembly;
21, a sleeve, 22, a jaw;
3, a puncture outfit;
31, 32, 33, 34, 35, a valve plate;
4, an external sleeve;
41, a stop piece and 42, a flanging structure.
Detailed Description
It should be noted that "proximal" as referred to herein refers to a side closer to the operator, and "distal" refers to a side closer to the patient. References herein to "upper", "lower", "front", "rear", "left", "right", etc. are made with reference to the orientation of fig. 1 and 2, as are the front-to-back directions.
Example 1
As shown in fig. 2 and 3, the present embodiment provides a puncture assembly including a puncture outfit 3 and an external cannula 4.
Wherein, the puncture outfit 3 is provided with a channel extending along the axial direction, and after the puncture outfit 3 punctures the abdominal cavity, the internal part of the abdominal cavity and the external part of the abdominal cavity are communicated through the channel. In the installation state of the puncture assembly, the external sleeve 4 is inserted into the channel, the external sleeve 4 is in friction fit with the channel, so that the external sleeve 4 is fixed in the channel, a passage in the external sleeve 4 is used for a surgical instrument to enter and exit the abdominal cavity from outside the body, and the external sleeve 4 completely covers the channel in the length direction.
The puncture subassembly that so set up is used for laparoscopic surgery to cooperate when the hemostatic forceps of background art use, the distal end of hemostatic forceps axle subassembly 2 inserts puncture ware 3 through the inside passageway of external sleeve pipe 4, and the sleeve pipe 21 of hemostatic forceps is contactless with the inner wall of puncture ware 3 passageway, avoids hemostatic forceps sleeve pipe 21 and puncture ware 3 passageway cooperation to produce great frictional force, thereby in hemostatic forceps firing process, adapter 11 drives sleeve pipe 21 to move the both sides that extrusion jaw 22 is relative distally in order to lock ligature clamp, and the firing process can not cause axle subassembly 2 to retreat, and then avoids ligature clamp to cause the tractive to the blood vessel when the lock blood vessel, and the broken vessel.
Specifically, the puncture outfit 3 comprises a catheter 31 and a support 32 connected with one end of the catheter 31, wherein a first passage is arranged in the catheter 31, a second passage is arranged in the support 32, the first passage is communicated with the second passage to form a passage for a surgical instrument to enter and exit, the support 32 is positioned outside the body in the puncture assembly installation state, and the catheter 31 is inserted into the abdominal cavity from outside the body.
Preferably, the outer cannula 4 has opposite first and second ends, the first end of the outer cannula 4 extending distally beyond the abutment 32 and the second end of the outer cannula 4 extending proximally beyond the abutment 32 in the installed condition of the spike assembly. It is further preferred that in this embodiment the first end of the outer cannula 4 extends distally beyond the catheter 31.
Preferably, a stop 41 is provided on the outer wall of the second end of the outer cannula 4, the puncture assembly in the mounted state the stop 41 abutting the proximal end of the abutment 32. In this way, the insertion position of the outer sleeve 4 in the channel can be positioned.
Preferably, at the second end of the outer sleeve 4, a flange structure 42 is provided which is turned towards the outside of the outer sleeve 4 in the circumferential direction of the outer sleeve 4. By arranging the flanging structure 42, the external sleeve 4 can be conveniently inserted and pulled in the channel.
Specifically, the support 32 is further provided with an air charging structure 33 communicating with the channel, and an air valve for controlling the opening and closing of the air charging structure 33. Through the inflation structure 33 and the gas valve, gas is blown into the channel, and the abdominal cavity is inflated.
Example 2
The main difference between this embodiment and embodiment 1 is that:
Preferably, as shown in fig. 4, a plurality of elastically deformable membrane flaps 34 are arranged on the inner wall of the channel along the circumferential direction of the channel, the plurality of membrane flaps 34 form a through hole 35 around the center of the channel, the radial dimension of the through hole 35 formed by the plurality of membrane flaps 34 in a free state is smaller than the radial dimension of the external sleeve 4, and the puncture assembly is arranged through the through hole 35 when the external sleeve 4 is in an installation state, and each membrane flap 34 is elastically deformed and is clung to the outer wall of the external sleeve 4. Thus, by providing the membrane flap 34 structure, the external sleeve 4 is allowed to be inserted into and pulled out from the channel, and meanwhile, larger friction fit can be provided between the external sleeve 4 and the channel, so that the external sleeve 4 is fixed in the channel.
Specifically, in the present embodiment, a plurality of petals 34 are provided on the inner wall of the second passage of the support 32.
Specifically, in the present embodiment, each of the petals 34 has a first end close to the inner wall of the channel and a second end far from the inner wall of the channel, and in the mounted state, the puncture assembly is disposed through the through hole 35 of the external sleeve 4, and the second end of each of the petals 34 is elastically deformed and is tightly attached to the outer wall of the external sleeve 4.
Further preferably, the petals 34 are trapezoidal, the petals 34 have a first end connected to the inner wall of the channel and a second end remote from the inner wall of the channel, the first end of the petals 34 are wide portions of the trapezoid, and the second end of the petals 34 are narrow portions of the trapezoid.
Further preferably, the plurality of petals 34 are evenly distributed along the channel circumference. In this way, after the external cannula 4 is inserted into the channel, the elastic force applied to the external cannula 4 by the plurality of membrane flaps 34 can stably maintain the external cannula 4 at the central position of the channel. Specifically, in the present embodiment, the number of the petals 34 is 6.
Further preferably, adjacent petals 34 are connected by an elastic membrane, and a plurality of petals 34 and a plurality of elastic membranes together form a through hole 35 around the center of the channel. In this way, when the external cannula 4 is inserted into the puncture assembly and penetrates through the through hole 35, the membrane flap 34 and the elastic membrane can form a seal between the external cannula 4 and the channel, which is beneficial to the pressure maintenance of the abdominal cavity.
The rest is the same as in embodiment 1 and will not be described here again.
Example 3
This embodiment provides a hemostatic device for laparoscopic surgery on the basis of embodiment 1 or embodiment 2.
As shown in fig. 5 and 6, the hemostatic device comprises a puncture assembly and a hemostatic forceps, wherein in an installed state, a cannula 21 of the hemostatic forceps is inserted into the puncture device 3 through an internal passage of an external cannula 4, and the external cannula 4 is in clearance fit with the cannula 21 of the hemostatic forceps.
Thus, the sleeve 21 of the hemostatic forceps is not contacted with the inner wall of the channel of the puncture outfit 3, so that the sleeve 21 of the hemostatic forceps is prevented from being matched with the channel of the puncture outfit 3 to generate larger friction force, and therefore, in the process of firing the hemostatic forceps, the adapter 11 drives the sleeve 21 to move distally to squeeze two opposite sides of the jaw 22 to buckle the ligature clamp, the shaft assembly 2 cannot be caused to retreat in the process of firing, and further, the blood vessel is prevented from being pulled and torn when the ligature clamp buckles the blood vessel.
Preferably, the external cannula 4 has an inner diameter that is 0.4-1 mm larger than the outer diameter of the hemostatic forceps cannula 21.
In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.
In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the utility model.
Claims (10)
1. A puncture assembly, characterized by comprising a puncture outfit (3) and an external sleeve (4), wherein the puncture outfit (3) is provided with a channel extending along the axial direction;
Under the installation state, the external sleeve (4) is inserted into the channel, friction fit is carried out between the external sleeve (4) and the channel, so that the external sleeve (4) is fixed in the channel, a passage in the external sleeve (4) is used for a surgical instrument to enter and exit the abdominal cavity from outside the body, and the external sleeve (4) completely covers the channel in the length direction.
2. The puncture assembly according to claim 1, characterized in that the puncture device (3) comprises a support (32) and a catheter (31) connected in sequence, the catheter (31) being for insertion from outside the body into the abdominal cavity, the support (32) being for providing support to the catheter (31) outside the body;
In the mounted state of the puncture assembly, the first end of the external sleeve (4) extends out of the support (32) distally, and the second end of the external sleeve (4) extends out of the support (32) proximally.
3. The puncture assembly according to claim 2, characterized in that the first end of the outer cannula (4) distally protrudes out of the cannula (21).
4. A puncture assembly according to claim 2, characterized in that a stop (41) is provided on the outer wall of the second end of the outer cannula (4);
in the mounted state, the stopper (41) abuts the proximal end of the holder (32).
5. The puncture assembly according to claim 2, characterized in that a flange structure (42) is provided at the second end of the outer sleeve (4) in the circumferential direction of the outer sleeve (4) turned towards the outside of the outer sleeve (4).
6. The puncture assembly according to claim 1, characterized in that a plurality of elastically deformable membrane flaps (34) are arranged on the inner wall of the channel along the circumferential direction of the channel, the plurality of membrane flaps (34) form a through hole (35) around the center of the channel, the radial dimension of the through hole (35) formed by the plurality of membrane flaps (34) in a free state is smaller than the radial dimension of the external sleeve (4), the external sleeve (4) is arranged penetrating through the through hole (35) in the installation state, and each membrane flap (34) is elastically deformed and is clung to the outer wall of the external sleeve (4).
7. The puncture assembly according to claim 6, characterized in that the flap (34) is trapezoidal, the flap (34) has a first end connected to the inner wall of the channel and a second end remote from the inner wall of the channel, the first end of the flap (34) being a wide portion of the trapezoid, the second end of the flap (34) being a narrow portion of the trapezoid.
8. The puncture assembly according to claim 6, characterized in that the plurality of petals (34) are evenly distributed along the channel circumference.
9. A hemostatic device for laparoscopic surgery, comprising a puncture assembly according to any of claims 1 to 8 and a hemostatic forceps having a cannula (21) for clamping a jaw (22);
In the installation state of the hemostatic device, the sleeve (21) of the hemostatic forceps is inserted into the puncture outfit (3) through the internal passage of the external sleeve (4), and the external sleeve (4) is in clearance fit with the sleeve (21) of the hemostatic forceps.
10. Hemostatic device for laparoscopic surgery according to claim 9, characterized in that the external cannula (4) has an inner diameter which is 0.4-1 mm larger than the outer diameter of the hemostatic forceps cannula (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421500767.6U CN222899226U (en) | 2024-06-28 | 2024-06-28 | A puncture assembly and a hemostatic device for laparoscopic surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421500767.6U CN222899226U (en) | 2024-06-28 | 2024-06-28 | A puncture assembly and a hemostatic device for laparoscopic surgery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222899226U true CN222899226U (en) | 2025-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421500767.6U Active CN222899226U (en) | 2024-06-28 | 2024-06-28 | A puncture assembly and a hemostatic device for laparoscopic surgery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222899226U (en) |
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- 2024-06-28 CN CN202421500767.6U patent/CN222899226U/en active Active
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