CN111053587B - One-stage advancement and retraction device and stapler - Google Patents
One-stage advancement and retraction device and stapler Download PDFInfo
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- CN111053587B CN111053587B CN201911408160.9A CN201911408160A CN111053587B CN 111053587 B CN111053587 B CN 111053587B CN 201911408160 A CN201911408160 A CN 201911408160A CN 111053587 B CN111053587 B CN 111053587B
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- flow channel
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
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- Life Sciences & Earth Sciences (AREA)
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- Heart & Thoracic Surgery (AREA)
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- General Health & Medical Sciences (AREA)
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- Portable Nailing Machines And Staplers (AREA)
Abstract
The invention relates to the field of medical instruments, in particular to a one-stage pushing and retracting device and an anastomat. The one-section propelling and retreating device comprises a cylinder body and a driving connecting mechanism, wherein the cylinder body comprises a first runner provided with a firing rod, a second runner provided with a firing piston and a third runner provided with a return piston, the firing rod is arranged on the rod part of the firing rod in the first runner, the second runner and the third runner are all communicated with the first runner, and one of the firing rod, the firing piston and the return piston is driven to operate through the driving connecting mechanism so as to drive the firing rod piston to move in an area between the communication ports of the second runner, the third runner and the first runner. The invention has the beneficial effects that the firing frequency is reduced through a simple structural design, the operation is simpler and more convenient, the firing and return systems are shared, the structure is simplified, and the operation is stable and smooth.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a one-stage pushing and retracting device and an anastomat.
Background
The anastomat mainly comprises a gun body and a component, and the structural principle of the existing anastomat is basically the same, wherein the gun body mainly comprises a gun barrel component, a firing mechanism, a driving mechanism, a safety mechanism, a return mechanism, a movable handle, a gun body shell and the like. The driving mechanism is mainly realized by the transmission of a gear, a rack or a ratchet wheel and a pawl mechanism, and mainly has the following problems that the anastomat has a complex structure, more assembly procedures and reduced reliability, the cutting process is complicated, and three to four times of firing are needed for completing one-time cutting. In particular to a linear cutting anastomat for a endoscope, which is mainly used for minimally invasive surgery, and the effect of the surgery is easily affected by multiple times of firing.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention is directed to a one-stage pushing and retracting device and an anastomat, which are used for solving the problems of complex structure, multiple firing in the cutting process and the like in the prior art.
To achieve the above and other related objects, the present invention provides a one-stage pushing and retracting device, including a cylinder and a driving connection mechanism, where the cylinder includes a first runner with a firing bar, a second runner with a firing piston and a third runner with a return piston, where the firing bar is located on a shaft portion in the first runner, and the second runner and the third runner are both communicated with the first runner, and one of the firing bar, the firing piston and the return piston is driven by the driving connection mechanism to operate to drive the firing bar piston to move in a region between communication ports of the second runner, the third runner and the first runner.
The invention has the beneficial effects that the firing frequency is reduced through a simple structural design, the operation is simpler and more convenient, the firing and return systems are shared, the structure is simplified, and the operation is stable and smooth.
Optionally, the drive coupling mechanism includes drive connecting rod and shifting block, locate on the drive connecting rod and be used for the first passageway that the firing bar passed, be used for the second passageway that the piston rod of firing piston passed and be used for the third passageway that the piston rod of return piston passed, still be equipped with first spout on the drive connecting rod, the shifting block is installed in first spout to slide along first spout and switch the open and close state of first passageway, second passageway and third passageway.
Optionally, the driving connection mechanism is externally provided with a shifting block handle, and the shifting block handle stretches into the first sliding groove to be connected with the shifting block and drives the shifting block to slide along the first sliding groove.
Optionally, the driving connecting rod is respectively provided with a positioning part corresponding to the first channel, the second channel and the third channel.
Optionally, the device also comprises a reset mechanism for driving the drive connecting mechanism to reset, and two ends of the reset mechanism are respectively connected with the cylinder body and the drive connecting mechanism.
Optionally, a first end cover for sealing two ends of the first flow channel and a second end cover for sealing the end of the second flow channel and the end of the third flow channel are installed on the cylinder body, and two ends of the reset mechanism are respectively connected with the second end cover and the driving connection mechanism.
Optionally, the effective areas of the firing piston and the return piston are both larger than the effective area of the firing rod piston.
Optionally, the communication ports of the second flow channel, the third flow channel and the first flow channel are positioned at two ends of the first flow channel, in an initial state, the firing rod piston is positioned at one end of the first flow channel close to the communication port of the second flow channel, the firing piston is positioned at one end of the second flow channel far away from the communication port of the second flow channel, and the return piston is positioned at one end of the first flow channel close to the communication port of the first flow channel.
The adoption of the alternative scheme has the beneficial effects of compact and reasonable layout, simplified structure and reduced firing times.
The anastomat comprises a movable handle, a gun body shell, a rotating assembly, a gun barrel assembly and a nail box assembly, and further comprises the one-section propelling and retracting device, wherein the one-section propelling and retracting device is arranged on the gun body shell, the movable handle is connected with a driving connecting mechanism and drives the driving connecting mechanism to drive a firing rod to move so that a cutting knife assembly in the nail box assembly operates.
Optionally, the movable handle is articulated with the gun body shell, the movable handle is provided with a second chute, the driving connecting mechanism is articulated with the second chute, and the movable handle rotates around the position where the movable handle is articulated with the gun body shell to drive the driving connecting mechanism to linearly move.
The invention has the beneficial effects that the common flow channel is arranged in the percussion and return of the anastomat, the layout is compact, the structure is simplified, the percussion of the anastomat can be completed once in the cutting process through reasonable structural design, and the operation is simple and convenient.
Drawings
FIG. 1 is a schematic view of an assembly of a one-stage advancing and retracting device of the present invention;
FIG. 2 shows a cross-sectional view of a one-stage advancing and retracting device of the present invention;
FIG. 3 is a schematic view of a driving connection mechanism of a one-stage pushing and retracting device according to the present invention;
FIG. 4 is a side view of the drive connection of the one-piece advancing and retracting device of the present invention;
FIG. 5 is a cross-sectional view of the drive connection mechanism of the one-piece push-in and pull-out device of the present invention;
FIG. 6 is a schematic diagram of the operation of the one-stage advancing and retracting device of the present invention;
FIG. 7 is a schematic view of a stapler according to the present invention;
fig. 8 shows a schematic view of the movable handle of the stapler of the invention.
Description of the part reference numerals
1. A one-stage advancing and retracting device;
11. A cylinder;
111. A first flow passage;
112. a second flow passage;
113. A third flow passage;
12. A firing bar;
121. A firing bar piston;
13. Firing the piston;
14. a return piston;
15. A reset mechanism;
16. a drive connection mechanism;
161. A drive link;
162. A first channel;
163. a second channel;
164. A third channel;
165. A shifting block;
166. A dial grip;
167. A first chute;
17. A first end cap;
18. A second end cap;
2. A movable handle;
21. A second chute;
3. A gun body housing;
4. A rotating assembly;
5. a barrel assembly;
6. A magazine assembly;
61. a cutter assembly;
62. A staple cartridge assembly.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention.
The terms such as "upper", "lower", "left", "right", "middle" and "a" and the like are also used in the present specification for convenience of description, but are not intended to limit the scope of the present invention, and the relative changes or modifications thereof are not limited to essential changes in technical content, but are also regarded as the scope of the present invention.
Before describing embodiments of the present invention in detail, an application environment of the present invention will be described. The technology of the invention is mainly applied to medical instruments and anastomat, in particular to a linear cutting anastomat for a cavity mirror. The invention solves the problems that the traditional anastomat needs to be fired for a plurality of times when cutting, has a complex structure, is inconvenient to operate, affects the operation quality and the like.
As shown in fig. 1 to 6, the one-stage advancing and retracting device of the present invention includes a cylinder 11, a return mechanism 15, and a drive connection mechanism 16, the cylinder 11 including a first flow passage 111 in which a firing rod 12 is installed, a second flow passage 112 in which a firing piston 13 is installed, and a third flow passage 113 in which the return piston 14 is installed. The firing bar 12 is provided with a firing bar piston 121 on a bar portion located in the first flow channel 111, and the firing bar piston 121 and the firing bar 12 move together. The second flow passage 112 and the third flow passage 113 are both communicated with the first flow passage 111, and one of the firing bar 12, the firing piston 13 and the return piston 14 is driven by the driving connecting mechanism 16 to operate so as to drive the firing bar piston 121 to move in the area between the communication ports of the second flow passage 112, the third flow passage 113 and the first flow passage 111. The driving connection mechanism 16 is reset through the reset mechanism 15 after running, and is ready for the next operation, two ends of the reset mechanism 15 are respectively connected with the cylinder body 11 and the driving connection mechanism 16, the reset mechanism 15 can adopt a spring, the driving connection mechanism 16 is stressed to run to compress the spring, and when the applied force disappears, the driving connection mechanism is reset under the action of the spring. The cylinder 11 is provided with a first end cover 17 for sealing two ends of a first flow channel 111 and a second end cover 18 for sealing the end of a second flow channel 112 and the end of a third flow channel 113, two ends of a reset mechanism 15 are respectively connected with the second end cover 18 and a driving connecting mechanism 16, the number of the reset mechanisms 15 can be set according to requirements, and in the invention, the two second end covers 18 are connected with the reset mechanisms 15, so that the structure is symmetrical, and the stable reset of the driving connecting mechanism 16 is facilitated. The cylinder body 11 may employ a hydraulic cylinder or an air cylinder, and when the cylinder body employs a hydraulic cylinder, the first flow passage 111, the second flow passage 112, and the third flow passage 113 are filled with liquid so as to push each piston to move in a designated area.
As shown in fig. 1 to 6, the driving connection mechanism 16 includes a driving link 161 and a shifting block 165, the driving link 161 is provided with a first channel 162 for passing through the firing bar 12, a second channel 163 for passing through a piston rod of the firing piston 13, and a third channel 164 for passing through a piston rod of the return piston 14, the driving link 161 is further provided with a first chute 167, the shifting block 165 is mounted in the first chute 167, and the opening and closing states of the first channel 162, the second channel 163, and the third channel 164 are slidingly switched along the first chute 167, so that any one of the firing bar 12, the firing piston 13, and the return piston 14 can be driven to operate by one driving connection mechanism. The outside of the drive connection mechanism 16 is provided with a shifting block handle 166, the shifting block handle 166 stretches into the first sliding groove 167 to be connected with the shifting block 165, and the shifting block handle 166 drives the shifting block 165 to slide along the first sliding groove 167 to switch positions. The driving link 161 is provided with positioning parts corresponding to the first channel 162, the second channel 163 and the third channel 164 respectively, wherein the outline of the first channel 162, the second channel 163 and the third channel 164 on the outer side of the driving link 161 is provided with an arc-shaped structure, whether the shifting block 165 moves to a designated position is assisted by the positioning parts of the arc-shaped structure, when the shifting block handle 166 is in upward direction against the top of the third channel 164, the shifting block handle 166 reaches the upward limit, the third channel 164 is closed, when the shifting block handle 166 is in downward direction against the bottom of the second channel 163, the shifting block handle 166 reaches the downward limit, the second channel 163 is closed, and when the shifting block handle 166 moves to the arc-shaped structure positioning part of the first channel 162, the first channel 162 is closed. The drive link can accurately reflect the open/close states of the first, second and third passages 162, 163, 164 by a simple structure.
As shown in fig. 1, 2 and 6, the communication ports of the second flow channel 112, the third flow channel 113 and the first flow channel 111 are located at two ends of the first flow channel 111, in an initial state, the firing bar piston 121 is located at one end of the first flow channel 111 close to the communication port of the second flow channel 112, that is, the position of the firing bar piston 121 at the maximum backward stroke, the firing piston 13 is located at one end of the second flow channel 112 far from the communication port of the second flow channel 112, that is, the position of the firing piston 13 at the maximum backward stroke, and the return piston 14 is located at one end of the first flow channel 111 close to the communication port of the first flow channel 111, that is, the position of the return piston 14 at the maximum forward stroke. The second channel 112 comprises a firing piston cavity and a small diameter section for moving the firing piston 13, the aperture of the firing piston cavity is larger than the aperture of the small diameter section connected with the first channel 111 by the second channel 112, the third channel 113 comprises a return piston cavity and a small diameter section for moving the return piston 14, the aperture of the return piston cavity is larger than the aperture of the small diameter section connected with the first channel 111 by the third channel 113, and the aperture of the small diameter section of the second channel 112 and the aperture of the small diameter section of the third channel 113 can be equal to the aperture of the first channel 111, so that the firing piston 13 and the return piston 14 can move a larger distance by moving a smaller distance to enable the firing rod piston 121 to move a larger distance. A firing piston 13, The effective area of the return piston 14 is larger than that of the firing rod piston 121, the effective area of the firing piston 13 is equal to that of the return piston 14, and the effective areas of the firing rod piston 121 are S 2, S 1, namely S 2＝n S1, wherein n is larger than 1. According to the working principle of the hydraulic cylinder, it can be known that the effective area of the small piston firing bar piston 121 is S 1, the displacement is L 1, the effective areas of the large piston firing piston 13 and the return piston 14 are S 2, the displacement is L 2, if the volume change amount of liquid in the compression process is ignored, according to the formula S 1L1＝S2L2, if S 2 is n times of S 1, L 1 is n times of L 2, the large piston can push the small piston to move by a larger distance through the movement of a smaller distance, so that the cutting process can be completed through one firing, and the firing times are reduced.
As shown in fig. 1 to 5, 7 and 8, the anastomat of the invention comprises a movable handle 2, a gun body shell 3, a rotary assembly 4, a gun barrel assembly 5, a nail box assembly 6 and the one-section type propelling and retracting device 1, wherein the nail box assembly 6 comprises a cutting knife assembly 61 and a nail box assembly 62, the one-section type propelling and retracting device 1 is arranged on the gun body shell 3, the movable handle 2 is connected with a driving connecting mechanism 16, and the driving connecting mechanism 16 is driven to drive a firing rod 12 to move so that the cutting knife assembly 61 operates. The movable handle 2 is hinged with the gun body shell 3, the movable handle 2 is provided with a second chute 21, a driving connecting rod 161 of the driving connecting mechanism 16 is hinged with the second chute 21 through a connecting piece, and the movable handle 2 rotates around the hinged position of the movable handle and the gun body shell 3 to drive the driving connecting mechanism 16 to linearly move, so that the operation of the nail bin assembly 62 and the cutting assembly 61 is realized.
When the anastomat performs cutting operation, the shifting block handle 166 is used for enabling the shifting block 165 to move to the position of the first channel 162 along the first sliding groove 167, the purpose of blocking the first channel 162 is achieved, the movable handle 2 is rotated, the movable handle 2 drives the driving connecting rod 161 to move, the driving connecting rod 161 drives the firing rod 12 to move under the blocking action of the shifting block 165, the firing rod 12 drives the cutting knife assembly 61 in the nail box assembly 6 to move, the nail box assembly 62 is enabled to be closed, at the moment, the force on the movable handle 2 is removed, the movable handle 2 is reset under the action of the reset mechanism 15, the shifting block 165 is moved to the position of the second channel 163, the purpose of blocking the second channel 163 is achieved, the movable handle 2 is rotated, the driving connecting rod 161 is driven to move under the blocking action of the shifting block 165, the driving connecting rod 161 drives the firing piston 13 to move under the blocking action of the shifting block 165, the firing rod piston 121 is driven by the transmission action of the hydraulic system to drive the cutting knife assembly 61 in the nail box assembly 6, the cutting knife assembly 61 in the nail box assembly 6 is cut, at the moment, the force on the movable handle 2 is removed, the reset is achieved under the action of the reset mechanism 15, and the reset mechanism is reset under the action of the movable handle 2. When the anastomat cutting assembly performs retreating action, in the anastomat cutting process, the return piston 14 moves from the position of the maximum forward travel to the position of the maximum backward travel, the shifting block 165 moves to the position of the third channel 164, the purpose of blocking the third channel 164 is achieved, the movable handle 2 is rotated, the movable handle 2 drives the driving connecting rod 161 to move, the driving connecting rod 161 drives the return piston 14 to move under the blocking action of the shifting block 165, the firing rod piston 121 is driven to move through the transmission action of the hydraulic system, the firing rod piston 121 drives the firing rod 12 to drive the cutter assembly 61 in the nail box assembly 6 to move, the return purpose is achieved, the force on the movable handle 2 is removed at the moment, and the movable handle 2 is reset under the action of the reset mechanism 15.
According to the invention, through a simple structural design, the anastomat only needs to be fired once during cutting, the operation steps are simplified, the operation quality is improved, the firing and the return share one set of driving connection mechanism, the structure is simplified, the assembly is simple and convenient, the failure rate is reduced, the reliability is improved, the layout is reasonable and compact, and the occupied space of the structure is reduced.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911408160.9A CN111053587B (en) | 2019-12-31 | 2019-12-31 | One-stage advancement and retraction device and stapler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911408160.9A CN111053587B (en) | 2019-12-31 | 2019-12-31 | One-stage advancement and retraction device and stapler |
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| Publication Number | Publication Date |
|---|---|
| CN111053587A CN111053587A (en) | 2020-04-24 |
| CN111053587B true CN111053587B (en) | 2024-12-24 |
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| CN201911408160.9A Active CN111053587B (en) | 2019-12-31 | 2019-12-31 | One-stage advancement and retraction device and stapler |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211633436U (en) * | 2019-12-31 | 2020-10-09 | 重庆迈科唯医疗科技有限公司 | One-stage propelling and retracting device and anastomat |
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|---|---|---|---|---|
| JP2005207489A (en) * | 2004-01-22 | 2005-08-04 | Ishikawajima Harima Heavy Ind Co Ltd | Switching valve actuator |
| AU2005203213C1 (en) * | 2004-07-28 | 2012-07-05 | Ethicon Endo-Surgery, Inc. | Surgical stapling instrument having an electroactive polymer actuated medical substance dispenser |
| US8905977B2 (en) * | 2004-07-28 | 2014-12-09 | Ethicon Endo-Surgery, Inc. | Surgical stapling instrument having an electroactive polymer actuated medical substance dispenser |
| US7357287B2 (en) * | 2005-09-29 | 2008-04-15 | Ethicon Endo-Surgery, Inc. | Surgical stapling instrument having preloaded firing assistance mechanism |
| US8684253B2 (en) * | 2007-01-10 | 2014-04-01 | Ethicon Endo-Surgery, Inc. | Surgical instrument with wireless communication between a control unit of a robotic system and remote sensor |
| CN103142269B (en) * | 2012-12-28 | 2014-12-17 | 苏州天臣国际医疗科技有限公司 | Impact assembly for anastomat and anastomat |
| CN103142278B (en) * | 2012-12-28 | 2014-12-03 | 苏州天臣国际医疗科技有限公司 | Circular tube-type anastomat |
| CN104873239B (en) * | 2015-05-12 | 2017-05-17 | 湖州源研生物医学工程有限公司 | Electric firing and tool withdrawal mechanism of incision anastomat |
| CN206056389U (en) * | 2016-07-30 | 2017-03-29 | 沈良骐 | Pneumatic firing device |
| CN106821440A (en) * | 2017-02-28 | 2017-06-13 | 苏州法兰克曼医疗器械有限公司 | A kind of pneumatic stapler and its drive device |
| CN207561941U (en) * | 2017-04-18 | 2018-07-03 | 重庆迈科唯医疗科技有限公司 | A kind of linear cutting anastomat |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211633436U (en) * | 2019-12-31 | 2020-10-09 | 重庆迈科唯医疗科技有限公司 | One-stage propelling and retracting device and anastomat |
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