CN112826557A - Anvil assembly and circular stapler - Google Patents
Anvil assembly and circular stapler Download PDFInfo
- Publication number
- CN112826557A CN112826557A CN201911163005.5A CN201911163005A CN112826557A CN 112826557 A CN112826557 A CN 112826557A CN 201911163005 A CN201911163005 A CN 201911163005A CN 112826557 A CN112826557 A CN 112826557A
- Authority
- CN
- China
- Prior art keywords
- nail anvil
- assembly
- fixture block
- anvil
- nail
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/11—Surgical instruments, devices or methods for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis, e.g. in a single operation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
- A61B2017/00398—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like using powered actuators, e.g. stepper motors, solenoids
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
The invention provides a nail anvil assembly, which comprises a nail anvil head and a nail anvil rod arranged on the nail anvil head, wherein an inserting cavity used for being inserted with a puncture shaft is formed in one end of the nail anvil rod far away from the nail anvil head, an annular elastic locking piece is sleeved on the outer circumference of the nail anvil rod, a lock hole communicated with the inserting cavity is communicated with the outer circumference of the nail anvil rod, a fixture block is arranged in the lock hole, one end of the fixture block abuts against the inner wall of the elastic locking piece, the other end of the fixture block extends into the inserting cavity, and the part of the lock hole close to the inserting cavity is interfered with the fixture block to limit the fixture block to fall into the inserting cavity completely. The nail anvil component has an exquisite structure and enough space for clamping, the insertion or separation of the nail anvil and the puncture shaft can not be influenced when the nail anvil is clamped, the elastic locking piece is not easy to deform by external force to influence the operation, and the high efficiency of the operation is ensured.
Description
Technical Field
The invention relates to a nail anvil assembly and a circular anastomat.
Background
Currently, circular staplers are often used to perform the cutting and closing functions of tissue in general surgical procedures. The nail anvil is an important part in the circular anastomat, and the nail anvil needs to be connected with a puncture shaft on the circular anastomat when tissues are anastomosed. Most of existing nail anvil connecting structures are long-strip elastic pieces with openings, but long-strip elastic pieces occupy a large proportion of the total length of the nail anvil, so that doctors can easily clamp the elastic pieces during clamping, the smooth connection or separation of the nail anvil and a puncturing shaft is not facilitated, and the long-strip elastic pieces are prone to deformation under the action of external force. Therefore, in order to meet the practical requirements of general surgery, it is necessary to design a nail anvil which has an exquisite structure, enough space as a clamping position and is not easy to deform.
Disclosure of Invention
The invention aims to provide a nail anvil which has an exquisite structure, has enough space as a clamping position and is not easy to deform.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a nail anvil subassembly includes nail anvil head and sets up nail anvil pole on the nail anvil head, keep away from in the nail anvil pole be formed with in the one end of nail anvil head for the grafting chamber of pegging graft with the puncture axle, the cover is equipped with annular elasticity hasp spare on the outer circumference of nail anvil pole, link up on the outer circumference of nail anvil pole have with the lockhole of grafting chamber intercommunication, be provided with the fixture block in the lockhole, the one end of fixture block support hold in the inner wall of elasticity hasp spare, the other end stretch into to the grafting intracavity, the lockhole is close to the part in grafting chamber with the fixture block forms to interfere in order to restrict the fixture block is whole to fall into the grafting intracavity.
Furthermore, the lock hole is in a circular truncated cone shape, an opening, close to the inserting cavity, in the lock hole is smaller than an opening, close to the elastic locking piece, the fixture block is provided with a first end and a second end, the first end abuts against the inner wall of the locking piece, the second end extends into the inserting cavity, and the sectional area of the first end is larger than that of the second end.
Further, the elastic locking piece is provided with an opening.
Furthermore, the number of the clamping blocks is one, and the positions of the clamping blocks, which are abutted against the elastic locking piece, are symmetrically arranged with the openings in the axial direction of the elastic locking piece.
Furthermore, the clamping block is fixedly connected with the inner wall of the elastic locking piece.
Further, the anvil rod includes certainly the body of rod and the one end of moulding plastics that nail anvil head downwardly extending formed inlays and establishes the metal body of rod on the body of rod of moulding plastics, the metal binding department that has the metal that is used for binding wire when supplying the operation on the metal body of rod, nail anvil head with the body of rod an organic whole of moulding plastics forms, metal binding department is close to nail anvil head.
Furthermore, an annular groove is formed in the outer circumference of the puncture shaft in an inward concave mode, and the elastic locking fastener is arranged in the annular groove.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a nail anvil subassembly includes nail anvil head and sets up nail anvil pole on the nail anvil head, keep away from in the nail anvil pole be formed with in the one end of nail anvil head and be used for the grafting chamber of pegging graft with the puncture axle, the cover is equipped with annular elasticity hasp spare on the outer circumference of nail anvil pole, link up on the outer circumference of nail anvil pole have with the lockhole of grafting chamber intercommunication, be provided with the fixture block in the lockhole, the one end of fixture block is fixed on the elasticity hasp spare, the other end stretch into extremely the grafting intracavity.
Furthermore, the lockhole is cylindrical, the fixture block has a first end fixed on the inner wall of the lock catch piece and a second end extending into the insertion cavity, and the sectional area of the first end is larger than that of the second end.
The invention also provides a circular anastomat which comprises a shell, a power input device for providing power, a nail bin assembly arranged on the shell, a closing driving assembly and a firing driving assembly which are connected with the nail bin assembly, a switching mechanism for selectively transmitting the power to the closing driving assembly or transmitting the power to the firing driving assembly, and the nail anvil assembly matched with the nail bin assembly to finish suturing.
The invention has the beneficial effects that: the nail anvil component provided by the invention has a delicate structure and enough space for clamping, the insertion or separation of the nail anvil and the puncture shaft cannot be influenced when the nail anvil is clamped, the elastic lock catch piece is not easy to deform by external force to influence the operation, and the high-efficiency operation of the operation is ensured.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic view of an anvil assembly according to a first embodiment of the present invention;
FIG. 2 is a schematic view of the anvil assembly of FIG. 1;
FIG. 3 is a schematic view of an anvil assembly according to a second embodiment of the present invention;
fig. 4 is a schematic view of a puncture shaft.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1, 2 and 4, the anvil assembly according to the first embodiment of the present invention includes an anvil head 1 and an anvil rod 2 disposed on the anvil head 1, wherein the anvil rod 2 includes an injection molding rod 28 extending downward from the anvil head 1 and a metal rod 21 having one end embedded in the injection molding rod 28. The metal rod body 21 is provided with a metal binding part 22 and a metal clamping part 24 for binding during operation, a plurality of positioning ribs 23 between the metal binding part 22 and the metal clamping part 24, an annular elastic locking piece 25 sleeved on the outer circumference of the anvil rod 2, and an insertion cavity 26 formed in one end far away from the anvil head 1 and used for being inserted with the puncture shaft 3. The metal binding part 22, the positioning rib 23, the metal clamping part 24 and the elastic locking fastener 25 are sequentially arranged on the metal rod body 21.
Specifically, the first circular ring 222 and the second circular ring 223 are formed by extending outward from the outer circumference of the metal rod 21, and the first circular ring 222 and the second circular ring 223 have the same diameter. The first ring 222, the second ring 223 and the metal rod 21 are surrounded to form a metal binding portion 22, and the metal binding portion 22 is close to the anvil head 1.
The metal rod body 21 is formed with a third ring 242 and a fourth ring 243 protruding outwards, specifically, the third ring 242 and the fourth ring 243 are formed by extending outwards from the outer circumference of the metal rod body 21, and the diameters of the third ring 242 and the fourth ring 243 are the same. The third ring 242, the fourth ring 243 and the metal rod 21 are surrounded to form a metal clamping portion 24. The metal clip portion 24 is distal from the anvil head 1 relative to the metal wire portion 22 and the metal clip portion 24 is outside of the insertion cavity 26.
A plurality of openings 244 are formed in the metal rod body 21, the openings 244 are located between the second ring 223 and the third ring 242, and the plurality of openings 244 may be arranged at equal intervals in the circumferential direction of the metal rod body 21. The plurality of holes 244 are used for allowing injection molding liquid to flow out from the plurality of holes 244 to form the positioning ribs 23 during injection molding, specifically, the injection molding liquid extends along the longitudinal direction of the metal rod body 21 from the injection molding rod body 28 outwards along the holes 244 to form the plurality of positioning ribs 23, and the nail anvil head 1, the injection molding rod body 28 and the guiding ribs 23 are formed in an integrated injection molding mode. Every location muscle 23 includes and follows the lengthwise direction of the metal body of rod 21 arranges and relative first end 231 and the second end 232 that sets up, first end 231 is located on the outer periphery of the metal body of rod 21 and extends to the below of second ring 223, second end 231 is located on the outer periphery of the metal body of rod 21 and extends to the top of third ring 242. The diameter of the second ring 223 is larger than that of the third ring 242, the diameter of the excircle formed by the first end 231 is the same as that of the second ring 223, and the diameter of the excircle formed by the second end 232 is the same as that of the third ring 242, so that the diameter of the excircle formed by the first end 231 is larger than that of the excircle formed by the second end 232, and the design is favorable for smooth butt joint of the nail anvil component and other components. In this embodiment, the number of the positioning ribs is 6, and indeed, in other embodiments, the number of the positioning ribs may be 4 to 8.
The metal rod body 21 is inserted into the anvil head 1, a plurality of injection molding holes 27 are formed in the metal rod body 21 at the position where the metal rod body contacts with the anvil head 1, and the injection molding holes 27 can be distributed at equal intervals in the circumferential direction of the metal rod body 21. When the injection molding hole 27 is used for preparing the anvil component through injection molding, injection molding liquid flows through the injection molding hole 27, so that an injection molding rod body 28 is easily formed.
The outer circumference of the anvil rod 2 is sleeved with an annular elastic locking piece 25, a lock hole 251 communicated with the inserting cavity 26 penetrates through the anvil rod 2, the lock hole 251 is in a circular truncated cone shape, and an opening of the lock hole 251, which is close to the inserting cavity 26, is smaller than an opening of the lock hole 251, which is close to the elastic locking piece 25. A clamping block 252 is disposed in the locking hole 251, the clamping block 252 has a first end (not numbered) abutting against the inner wall of the locking element 25 and a second end (not numbered) extending into the inserting cavity 26, and the sectional area of the first end is larger than that of the second end. The part of the locking hole 251 close to the plugging cavity 26 interferes with the latch 252 to limit the latch 252 from falling into the plugging cavity 26, and indeed, in this embodiment, the latch 252 may also be fixedly connected with the inner wall of the elastic locking member 25 to limit the latch 252 from falling into the plugging cavity 26.
In this embodiment, the number of the latch blocks 252 is one, the elastic locking member 25 has an opening (not shown), and the positions of the latch blocks 252 abutting against the elastic locking member 25 are symmetrically arranged with respect to the axial direction of the elastic locking member 25. Indeed, in other embodiments, the number of the latch 252 may be multiple, multiple latches 252 are disposed in the corresponding locking holes 251, and the positions of the latches 252 abutting against the elastic locking member 25 are arranged at equal intervals with the openings.
Indeed, as shown in fig. 3 in the second embodiment of the present invention, the portion of the lock hole 451 of the anvil rod 4 close to the inserting cavity 46 does not need to form interference with the latch block 452 to limit the latch block 452 to completely fall into the inserting cavity 46, the lock hole 451 communicating with the inserting cavity 46 penetrates through the outer circumference of the anvil rod 4, the latch block 452 is disposed in the lock hole 451, one end of the latch block 452 is fixed on the elastic locking member 45, and the other end of the latch block 452 extends into the inserting cavity, specifically, the lock hole 451 has a cylindrical structure, the latch block 452 has a first end (not numbered) fixed on the inner wall of the locking member and a second end (not numbered) extending into the inserting cavity, and the cross-sectional area of the first end is greater than that of the second end.
Referring to fig. 4, an annular groove 31 is formed on the outer circumference of the puncturing shaft 3 in an inward concave manner, when the anvil assembly is connected with the puncturing shaft 3, and when the puncturing shaft 3 enters the anvil rod 2, the puncturing shaft 3 moves the latch 252 from the insertion cavity 26 to drive the elastic latch member 25 to deform, and when the annular groove 31 moves to the latch 252, the elastic latch member 25 recovers to deform to drive the latch 252 to enter the insertion cavity 26, so that the annular groove 31 is formed, and the anvil assembly is connected with the puncturing shaft 3. Otherwise, the nail anvil component and the puncture shaft 3 can be easily separated.
The nail anvil assembly provided by the invention can be applied to a circular anastomat, and the circular anastomat comprises a shell, a power input device for providing power, a nail bin assembly arranged on the shell, a closing driving assembly and a firing driving assembly which are connected with the nail bin assembly, a switching mechanism for selectively transmitting the power to the closing driving assembly or transmitting the power to the firing driving assembly, and a nail anvil assembly which is matched with the nail bin assembly to finish suturing.
In summary, the nail anvil head, the injection molding rod body and the positioning rib of the nail anvil assembly provided by the invention are integrally formed by injection molding, and the nail anvil assembly is provided with the metal binding part, so that the nail anvil head, the injection molding rod body and the positioning rib are not required to be manufactured in two parts, the manufacturing process is simple, and the cost is low. 2. The nail anvil component provided by the invention has a delicate structure and enough space for clamping, the insertion or separation of the nail anvil and the puncture shaft cannot be influenced when the nail anvil is clamped, the elastic lock catch piece is not easy to deform by external force to influence the operation, and the high-efficiency operation of the operation is ensured.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a nail anvil subassembly, is in including nail anvil head and setting nail anvil pole on the nail anvil head, keep away from in the nail anvil pole be formed with in the one end of nail anvil head for the grafting chamber of pegging graft with the puncture axle, a serial communication port, the cover is equipped with annular elasticity hasp piece on the outer circumference of nail anvil pole, link up on the outer circumference of nail anvil pole have with the lockhole of grafting chamber intercommunication, be provided with the fixture block in the lockhole, the one end of fixture block support hold in the inner wall of elasticity hasp piece, the other end stretch into to the grafting intracavity, the lockhole is close to the part of grafting chamber with the fixture block forms to interfere in order to restrict the fixture block is whole to fall into the grafting intracavity.
2. The nail anvil assembly of claim 1, wherein said locking hole is in the shape of a circular truncated cone, an opening of said locking hole near said insertion cavity is smaller than an opening near said elastic locking member, said locking block has a first end abutting against an inner wall of said locking member and a second end extending into said insertion cavity, and a cross-sectional area of said first end is larger than a cross-sectional area of said second end.
3. The anvil assembly of claim 1 wherein said flexible latch member has an opening.
4. The anvil assembly of claim 3 wherein said latch is provided in a number of one, and said latch is disposed symmetrically with respect to the axis of said resilient latch member at a position where said latch abuts against said resilient latch member.
5. The anvil assembly of claim 1 wherein said latch is fixedly attached to an inner wall of said flexible latch member.
6. The nail anvil assembly according to claim 1, wherein said nail anvil rod comprises an injection molding rod body formed by extending downward from said nail anvil head and a metal rod body embedded at one end of said injection molding rod body, said metal rod body has a metal binding portion for binding during operation, said nail anvil head and said injection molding rod body are integrally formed by injection molding, and said metal binding portion is close to said nail anvil head.
7. The anvil assembly of claim 1 wherein said puncturing shaft is recessed on an outer circumference thereof to define an annular recess, said resilient latch member being disposed within said annular recess.
8. The utility model provides a nail anvil subassembly, is in including nail anvil head and setting nail anvil pole on the nail anvil head, keep away from in the nail anvil pole be formed with in the one end of nail anvil head and be used for the grafting chamber of pegging graft with the puncture axle, a serial communication port, the cover is equipped with annular elasticity hasp piece on the outer circumference of nail anvil pole, link up on the outer circumference of nail anvil pole have with the lockhole of grafting chamber intercommunication, be provided with the fixture block in the lockhole, the one end of fixture block is fixed on the elasticity hasp piece, the other end stretches into to in the grafting chamber.
9. The anvil assembly of claim 8 wherein said locking aperture is cylindrical and said latch has a first end fixed to an inner wall of said locking member and a second end extending into said receiving cavity, said first end having a cross-sectional area greater than a cross-sectional area of said second end.
10. A circular stapler, comprising a housing, a power input device for providing power, a cartridge assembly disposed in the housing, a closing driving assembly and a firing driving assembly connected with the cartridge assembly, a switching mechanism for selectively transmitting power to the closing driving assembly or to the firing driving assembly, and an anvil assembly according to any one of claims 1 to 9 cooperating with the cartridge assembly to perform stapling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911163005.5A CN112826557A (en) | 2019-11-25 | 2019-11-25 | Anvil assembly and circular stapler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911163005.5A CN112826557A (en) | 2019-11-25 | 2019-11-25 | Anvil assembly and circular stapler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112826557A true CN112826557A (en) | 2021-05-25 |
Family
ID=75921996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911163005.5A Pending CN112826557A (en) | 2019-11-25 | 2019-11-25 | Anvil assembly and circular stapler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112826557A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0980675A2 (en) * | 1998-08-17 | 2000-02-23 | DLR Deutsches Zentrum für Luft- und Raumfahrt e.V. | Device connecting an actuator to various surgical instruments |
| CN2383476Y (en) * | 1999-02-10 | 2000-06-21 | 张祖仁 | Surgical tubular anastomat |
| CN200957100Y (en) * | 2006-08-03 | 2007-10-10 | 瑞奇外科器械(北京)有限公司 | Plug on/off structure between body and anvil of surgery anastomat |
| CN102783979A (en) * | 2011-05-19 | 2012-11-21 | 伊西康内外科公司 | Improved anvil and cartridge alignment configuration for a circular stapler |
| CN107049402A (en) * | 2017-05-16 | 2017-08-18 | 上海博洽医疗器械有限公司 | The Quick assembling-disassembling structure of the execution head of surgery circular staplers |
| CN107809968A (en) * | 2015-06-26 | 2018-03-16 | 伊西康有限责任公司 | Surgical stapler with readiness indicator |
| CN211243547U (en) * | 2019-11-25 | 2020-08-14 | 苏州英途康医疗科技有限公司 | Nail anvil assembly and circular anastomat |
| CN211243546U (en) * | 2019-11-25 | 2020-08-14 | 苏州英途康医疗科技有限公司 | Nail anvil assembly and circular anastomat |
-
2019
- 2019-11-25 CN CN201911163005.5A patent/CN112826557A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0980675A2 (en) * | 1998-08-17 | 2000-02-23 | DLR Deutsches Zentrum für Luft- und Raumfahrt e.V. | Device connecting an actuator to various surgical instruments |
| CN2383476Y (en) * | 1999-02-10 | 2000-06-21 | 张祖仁 | Surgical tubular anastomat |
| CN200957100Y (en) * | 2006-08-03 | 2007-10-10 | 瑞奇外科器械(北京)有限公司 | Plug on/off structure between body and anvil of surgery anastomat |
| CN102783979A (en) * | 2011-05-19 | 2012-11-21 | 伊西康内外科公司 | Improved anvil and cartridge alignment configuration for a circular stapler |
| CN107809968A (en) * | 2015-06-26 | 2018-03-16 | 伊西康有限责任公司 | Surgical stapler with readiness indicator |
| CN107049402A (en) * | 2017-05-16 | 2017-08-18 | 上海博洽医疗器械有限公司 | The Quick assembling-disassembling structure of the execution head of surgery circular staplers |
| CN211243547U (en) * | 2019-11-25 | 2020-08-14 | 苏州英途康医疗科技有限公司 | Nail anvil assembly and circular anastomat |
| CN211243546U (en) * | 2019-11-25 | 2020-08-14 | 苏州英途康医疗科技有限公司 | Nail anvil assembly and circular anastomat |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20240081828A1 (en) | Connection system for the detachable fixation of a hollow cylindrical component at a recess | |
| CN101318055B (en) | Medical connector | |
| US9421345B2 (en) | IV-catheter insertion device | |
| CN108272493B (en) | Small-sized laparoscope puncture outfit device | |
| CN116942242A (en) | End effector and conveying device | |
| RU2012125276A (en) | THE INTRODUCTOR OF THE CIRCLE STITCHING TOOL WITH THE EASY-REMOVABLE ASSEMBLY OF THE RIGID CAP | |
| JP2018023895A (en) | Positive displacement stopper for pre-filled syringe | |
| JP2014004370A (en) | Optical obturator | |
| EA200201089A1 (en) | THE DEVICE FOR DISCONNECTION OF THE CONNECTING END OF THE NEEDLE FOR SUBCUTANEOUS INJECTIONS FROM THE END OF THE TOOL FOR THE INJECTIONS | |
| CN104334091B (en) | access port | |
| CN211243546U (en) | Nail anvil assembly and circular anastomat | |
| KR101988415B1 (en) | Coupling mechanism of block | |
| CN211243547U (en) | Nail anvil assembly and circular anastomat | |
| CN112826557A (en) | Anvil assembly and circular stapler | |
| CN104207815A (en) | Stapler nail anvil assembly and stapler | |
| CN209996435U (en) | puncture head connecting assembly and puncture outfit | |
| CN211460338U (en) | End effector and medical instrument | |
| CN109646297B (en) | Syringe and locking piece thereof | |
| CN203328752U (en) | Anastomat anvil assembly and anastomat | |
| CN208587379U (en) | Hole card spring and shell | |
| CN107049430B (en) | Assembled expander | |
| CN215134946U (en) | Material bin fixing structure and material pusher using same | |
| CN113456180B (en) | Casing puncture outfit | |
| CN211213314U (en) | Blood vessel anastomat | |
| CN211434758U (en) | Implantable pulse generator and electrode thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |