CN213156138U - Surgical stitching instrument with empty nail bin protection function - Google Patents
Surgical stitching instrument with empty nail bin protection function Download PDFInfo
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- CN213156138U CN213156138U CN202021136629.6U CN202021136629U CN213156138U CN 213156138 U CN213156138 U CN 213156138U CN 202021136629 U CN202021136629 U CN 202021136629U CN 213156138 U CN213156138 U CN 213156138U
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- pushing block
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Abstract
The utility model provides a surgical stitching instrument with empty nail bin protection function, which comprises an end effector and a driving component, wherein the end effector comprises a nail bin shell, stitching nails, a nail pushing block and an anvil block, the upper surface of the nail bin shell is provided with a nail outlet hole for pushing out the stitching nails, and the nail pushing block is used for pushing the stitching nails to move upwards; the driving assembly comprises a driving push rod and an empty nail bin protecting piece, and the driving push rod is used for driving the nail pushing block to push the suturing nails upwards; before the suturing nails are pushed, the locking end of the empty nail bin protecting piece is in biased abutting contact with one side of the nail pushing block, when the driving push rod drives the nail pushing block to push the suturing nails upwards and after the driving push rod is reset, the locking end is inserted into a gap between the driving push rod and the nail pushing block through the action of biasing force. The utility model discloses a simple and effectual empty nail storehouse protection piece structure installs the function of realizing empty nail storehouse protection in the surgery stitching instrument easily, and has effectively saved the space, is fit for using in the stitching instrument of small-size.
Description
Technical Field
The utility model relates to a medical instrument, in particular to a surgical stitching instrument with empty nail bin protection function.
Background
The transverse cutting anastomat/stitching instrument is mainly used for the creation of an anastomosis opening and the closure of a stump or an incision in the operations of reconstructing a digestive tract and excising organs, wherein the operation field is difficult to expose. At present, the transverse cutting anastomat is generally used in the following process: after the locking handle positions and locks tissues, the firing handle is pushed, the cutter hidden in the nail bin assembly is pushed by the center rod driven by the firing handle, the other side of the tissues to be cut is a nail abutting seat and a cutter pad providing a tissue cutting platform, and the whole cutting process of the driven straight cutter is to cut off the cutter pad to represent that the cutting task is completed.
In order to prevent an operator from mistakenly pushing the cutter again after completing anastomosis to cause unnecessary injury to a human body, a hollow nail bin protection device is generally arranged on the anastomat, for example, the application number CN201911115569.1 discloses a hollow nail bin non-firing device of a disposable intracavity cutting anastomat, and the device is provided with a driving sleeve, a safety spring, a fixing fork, a firing safety pin, an upper half shell, a lower half shell, a cutter and a cutter pushing plate. The doctor can avoid carrying out the mistake percussion to empty nail storehouse in the operation, has reduced misoperation's possibility to the operation safety has been guaranteed.
According to actual requirements, the transverse stitching instrument in the prior art can comprise a cutter or not, but needs to be protected by an empty nail bin so as to avoid secondary triggering. However, most of the prior art empty nail bin protection devices require more parts and complicated structural design, and are mostly used for intracavity anastomats, and the prior art has no simpler and better empty nail bin protection device for transverse suturing devices.
SUMMERY OF THE UTILITY MODEL
The technical scheme of the utility model is realized like this:
the technical scheme is that the surgical stitching instrument with the empty nail bin protection function comprises an end effector and a driving assembly used for driving the end effector to stitch, wherein the end effector comprises a nail bin shell, stitching nails, a nail pushing block and an anvil block, the upper surface of the nail bin shell is provided with a nail outlet hole for pushing the stitching nails out, and the nail pushing block is used for pushing the stitching nails to move upwards;
the driving assembly comprises a driving push rod and an empty nail bin protecting piece, and the driving push rod is used for driving the nail pushing block to push the stitching nails upwards; before the staples are pushed, the locking end of the empty staple box protecting piece is in biased abutment with one side of the staple pushing block, and after the driving push rod drives the staple pushing block to push the staples upwards and the driving push rod is reset, the locking end is inserted into a gap between the driving push rod and the staple pushing block through the action of a biasing force.
Further, the drive assembly further comprises a drive housing, the cartridge housing being slidable relative to the anvil, the drive housing being coupled to the cartridge housing for driving the cartridge housing toward the anvil.
Furthermore, the empty nail bin protecting piece further comprises a fixing portion and an elastic biasing portion, the fixing portion is fixed on the driving shell or the nail bin shell, the locking end is connected with the fixing portion through the elastic biasing portion, and the elastic biasing portion provides a biasing force which abuts against one side of the nail pushing block for the locking end.
In another aspect, the empty cartridge protector further comprises a resilient biasing member, a pivot portion, and a fixed attachment portion; the empty nail bin protecting piece and the driving shell rotate relatively through the pivot part, and the locking end is connected with the pivot part through a fixed connecting part;
one end of the elastic biasing member is deformably abutted against the driving housing, and the other end is fixed relative to the locking end, thereby providing a biasing force to the locking end to abut against one side of the staple pushing block.
The elastic biasing part is a spring piece, and the other end of the spring piece is fixedly connected with the pivoting part or the fixed connecting part or the locking end. Or, the elastic biasing part is an elastic metal wire, the elastic metal wire is sleeved on the pivoting part, and the other end of the elastic metal wire is abutted against the locking end.
Further, the nail bin shell is provided with an open slot, and the locking end of the empty nail bin protecting piece penetrates through the open slot and then is in biased abutting joint with one side of the nail pushing block.
Further, the surface of one side of the nail pushing block and the surface of one side of the driving push rod are on the same plane.
Further, at the position after the nail pushing block pushes the suturing nail upwards, the friction force applied by the nail bin shell to the nail pushing block is larger than the gravity of the nail pushing block.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
(1) the empty nail bin protecting piece of the utility model has simple and convenient structure and manufacture, is easy to be arranged in a surgical stitching instrument to realize the function of empty nail bin protection, effectively saves space and is suitable for being used in the stitching instrument with small size;
(2) the empty nail bin protecting piece of the utility model is matched with the motion relation between the driving push rod and the nail pushing block in the stitching instrument, and can completely prevent the secondary percussion of the nail bin by inserting into the gap between the driving push rod and the nail pushing block;
(3) the secondary pushing of the driving push rod can be stably and reliably blocked by the biasing force of the elastic piece, and the function of empty nail bin protection is realized.
Drawings
FIG. 1 is a schematic diagram of an internal structure of an embodiment of the present invention at first gear;
FIG. 2 is a schematic structural view of FIG. 1 with the cartridge housing removed;
FIG. 3 is a schematic structural view of an empty magazine protector according to an embodiment of the present invention;
FIG. 4 is a schematic view of the structure of the empty protection member of the nail magazine in cooperation with the driving housing according to the embodiment of the present invention;
FIG. 5 is a schematic diagram of an internal structure of the second gear according to the embodiment of the present invention;
FIG. 6 is a schematic structural view of FIG. 5 with the cartridge housing removed;
FIG. 7 is a schematic view of the internal structure of the cartridge case removed during a firing operation according to the embodiment of the present invention;
FIG. 8 is a schematic view of the internal structure of the cartridge case removed after the first firing of the present invention;
FIG. 9 is a schematic structural view of a empty cartridge protector according to an embodiment of the present invention;
fig. 10 is a schematic view of the structure of the empty cartridge protector and the driving housing according to the embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 8, the present embodiment provides a surgical stapler with empty cartridge protection function, the surgical stapler includes an end effector 1 and a driving assembly 2 for driving the end effector 1 to staple, the end effector 1 includes a cartridge housing 11, staples 12, a staple pusher 13 and an anvil 14, the cartridge housing 11 is provided with staple ejection holes 15 for ejecting the staples 12 on the upper surface, the staple pusher 13 is used for pushing the staples 12 upwards to eject the staples 12 from the staple ejection holes 15 and bend against the anvil 14, so as to staple the human body. While this embodiment is a stapler without a cutter, in other embodiments it may be provided with a cutter that moves upward with the staple pusher 13 to cut tissue while simultaneously completing the stapling.
Specifically, the driving assembly 2 comprises a driving push rod 22 and an empty cartridge protector 23, wherein the driving push rod 22 is used for driving the staple pushing block 13 to push the staples 12 upwards; before the staples are pushed, the locking end 231 of the empty staple box protecting piece 23 is in biased abutment with one side of the staple pushing block 13, when the driving push rod 22 drives the staple pushing block 13 to push the staples 12 upwards and after the driving push rod 22 is reset, the locking end 231 is inserted into a gap between the driving push rod 22 and the staple pushing block 13 through the biasing force, so that the driving push rod 22 is prevented from firing the staple box upwards again when the empty staple box is realized, and the protection effect is achieved.
The driving assembly 2 further includes a driving housing 21, the cartridge housing 11 is capable of sliding relative to the anvil 14, the driving housing 21 is connected to the cartridge housing 11 for driving the cartridge housing 11 to move toward the anvil 14, and the following describes states of several staplers and positional relationships of corresponding components with reference to the accompanying drawings:
referring to fig. 1-2, which is a schematic view of the internal structure of the stapler in the first gear, when the staple outlet hole 14 of the upper surface of the cartridge housing 11 is spaced from the lower surface of the anvil 14, the locking end 231 of the empty cartridge protection member 23 is biased to abut against the staple pushing block 13, specifically, the cartridge housing 11 is provided with an opening groove 111, and the locking end 231 of the empty cartridge protection member 23 passes through the opening groove 111 and then is biased to abut against one side of the staple pushing block 13.
The drive housing 21 drives the cartridge housing 11 toward the anvil 14, and the upper surface of the cartridge housing 11 is spaced from the lower surface of the anvil 14 to a reduced distance to close the anvil 14, so that the tissue to be stapled can be fixed, as shown in fig. 5-6, in the second position, and since the drive housing 21 and the cartridge housing 11 are not in relative positions, the locking end 231 of the empty cartridge protector 23 is still biased against the staple pusher 13.
Further, the driving pushing rod 22 is pushed to move upwards, when the upper surface of the driving pushing rod 22 abuts against the lower surface of the staple pushing block 13, the staple pushing block 13 is pushed upwards continuously, so that the staples 12 are driven to move upwards and are pushed out from the staple outlet holes 15, as shown in fig. 7, at this time, the driving pushing rod 22 enters the cartridge shell 11 partially, during the pushing upwards, the height of the locking end 231 is unchanged relative to the cartridge shell 11, while the staple pushing block 13 moves upwards relatively relative to the cartridge shell 11, so that the locking end 231 moves relative to the staple pushing block 13, and after the lowest end of the staple pushing block 13 is higher than the locking end 231, the locking end 231 abuts against the side surface of the driving pushing rod 22. In this embodiment, the end of the driving rod 22 has a guiding slope for guiding the locking end 231 to slide into the side of the driving rod, and in another embodiment, the surface of one side of the nail pushing block 13 and the surface of one side of the driving rod 22 are in the same plane, so that smooth transition can be performed; in other embodiments, it is also possible that the surface of the side of the driving plunger 22 is closer to the central axis of the stapler than the surface of the side of the staple pusher 13, which more securely ensures that the locking end 231 abuts against the surface of the side of the driving plunger 22.
When the driving push rod 22 drives the staple pushing block 13 to push the staples 12 upwards and the driving push rod 22 is reset, the locking end 231 is inserted into the gap between the driving push rod 22 and the staple pushing block 13 through the biasing force, as shown in fig. 8, thereby completing the function of protecting the empty staple cartridge.
In this embodiment, as shown in FIGS. 3-4, the empty cartridge protector 23 further includes a resilient biasing member 232, a pivot portion 233, and a securing attachment portion 234; the empty magazine protector 23 rotates relative to the drive housing 21 via the pivot portion 233, and the locking end 231 is connected to the pivot portion 233 via the fixed connecting portion 234;
one end of the elastic biasing member 232 is deformably abutted against the drive housing 21 and the other end is fixed relative to the locking end 231, thereby providing the locking end 231 with a biasing force abutting against one side of the staple pusher 13.
The elastic biasing member 232 is an elastic wire, which is sleeved on the pivot part 233, and the other end of the elastic wire abuts against the locking end 231.
Example two:
in the present embodiment, as shown in fig. 9 to 10, the difference from the first embodiment is that, as shown in fig. 9 to 10, one end of the elastic biasing member 232 is deformably abutted against the drive housing 21 and the other end is fixed relative to the locking end 231, thereby providing the locking end 231 with a biasing force abutting against one side of the staple pusher 13.
The elastic biasing element 232 is a spring plate, and the other end of the spring plate is fixedly connected with the pivot part 233 or the fixed connecting part 234 or the locking end 231, and the elastic biasing element 232 in the embodiment can provide larger elastic force.
Example three:
in this embodiment, the difference from the first embodiment is that the empty magazine protecting member 23 further includes a fixing portion and an elastic biasing portion, the fixing portion is fixed on the driving housing 21 or the magazine housing 11, the locking end 231 is connected to the fixing portion through the elastic biasing portion, the elastic biasing portion provides a biasing force for the locking end 231 to abut against one side of the staple pushing block 13, and the empty magazine protecting member 23 is an integrally formed mechanism in this embodiment and provides a biasing force by an elastic force of a main body thereof.
As can be seen from the above-described embodiments,
(1) the empty nail bin protecting piece of the utility model has simple and convenient structure and manufacture, is easy to be arranged in a surgical stitching instrument to realize the function of empty nail bin protection, effectively saves space and is suitable for being used in the stitching instrument with small size;
(2) the empty nail bin protecting piece of the utility model is matched with the motion relation between the driving push rod and the nail pushing block in the stitching instrument, and can completely prevent the secondary percussion of the nail bin by inserting into the gap between the driving push rod and the nail pushing block;
(3) the secondary pushing of the driving push rod can be stably and reliably blocked by the biasing force of the elastic piece, and the function of empty nail bin protection is realized.
As described above, the present invention has been explained in full in accordance with the gist of the present invention, but the present invention is not limited to the above-described embodiments and implementation methods, and features of the embodiments may be combined with each other without contradiction. The practitioner of the related art can make various changes and implementations within the scope permitted by the technical idea of the present invention.
Claims (9)
1. A surgical stapler with empty cartridge protection, comprising an end effector (1) and a drive assembly (2) for driving the end effector (1) to perform stapling, characterized in that:
the end effector (1) comprises a nail bin shell (11), sewing nails (12), a nail pushing block (13) and an anvil block (14), wherein the upper surface of the nail bin shell (11) is provided with a nail outlet hole (15) for pushing out the sewing nails (12), and the nail pushing block (13) is used for pushing the sewing nails (12) to move upwards;
the driving assembly (2) comprises a driving push rod (22) and an empty nail box protecting piece (23), wherein the driving push rod (22) is used for driving the nail pushing block (13) to push the sewing nails (12) upwards; before the staples are pushed, the locking end (231) of the empty staple box protecting piece (23) is in biased abutment against one side of the staple pushing block (13), and when the driving push rod (22) drives the staple pushing block (13) to push the staples (12) upwards and after the driving push rod (22) is reset, the locking end (231) is inserted into a gap between the driving push rod (22) and the staple pushing block (13) through the action of a biasing force.
2. A surgical stapler with empty cartridge protection according to claim 1, characterized in that said driving assembly (2) further comprises a driving housing (21), said cartridge housing (11) being slidable with respect to said anvil (14), said driving housing (21) being connected to said cartridge housing (11) for driving said cartridge housing (11) towards said anvil (14).
3. The surgical stapler with empty cartridge protection function according to claim 2, wherein the empty cartridge protector (23) further comprises a fixing portion fixed to the driving housing (21) or the cartridge housing (11), and an elastic biasing portion, the locking end (231) is connected with the fixing portion through the elastic biasing portion, and the elastic biasing portion provides a biasing force to the locking end (231) to abut against one side of the staple pushing block (13).
4. The surgical stapler with empty cartridge protection of claim 2, wherein the empty cartridge protector (23) further comprises a resilient biasing member (232), a pivot portion (233), and a fixed attachment portion (234); the empty magazine protector (23) is rotated relative to the drive housing (21) by the pivot portion (233), and the locking end (231) is connected to the pivot portion (233) by a fixed connecting portion (234);
one end of the elastic biasing member (232) is deformably abutted against the driving housing (21), and the other end is fixed relative to the locking end (231), thereby providing the locking end (231) with a biasing force abutted against one side of the staple pusher (13).
5. The surgical stapler with empty cartridge protection according to claim 4, wherein the elastic biasing member (232) is a spring plate, and the other end of the spring plate is fixedly connected with the pivot portion (233) or the fixed connecting portion (234) or the locking end (231).
6. The surgical stapler with empty cartridge protection according to claim 4, wherein the resilient biasing member (232) is a resilient wire that is sleeved on the pivot portion (233) and the other end abuts against the locking end (231).
7. The surgical stapler with empty cartridge protection according to claim 1, wherein the cartridge housing (11) is provided with an open slot (111), and the locking end (231) of the empty cartridge protector (23) is biased to abut against one side of the staple pusher block (13) after passing through the open slot (111).
8. Surgical stapler with empty cartridge protection according to claim 1, characterized in that the surface of one side of the pusher block (13) is in the same plane as the surface of one side of the drive pusher bar (22).
9. A surgical stapler with empty cartridge protection according to claim 1, characterized in that in the position after the staple pusher (13) pushes the staples (12) upwards, the cartridge housing (11) exerts a friction force on the staple pusher (13) which is greater than the weight force of the staple pusher (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021136629.6U CN213156138U (en) | 2020-06-18 | 2020-06-18 | Surgical stitching instrument with empty nail bin protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021136629.6U CN213156138U (en) | 2020-06-18 | 2020-06-18 | Surgical stitching instrument with empty nail bin protection function |
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| Publication Number | Publication Date |
|---|---|
| CN213156138U true CN213156138U (en) | 2021-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021136629.6U Active CN213156138U (en) | 2020-06-18 | 2020-06-18 | Surgical stitching instrument with empty nail bin protection function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113331896A (en) * | 2021-06-07 | 2021-09-03 | 苏州法兰克曼医疗器械有限公司 | Anastomat with high self-supporting stability during use |
-
2020
- 2020-06-18 CN CN202021136629.6U patent/CN213156138U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113331896A (en) * | 2021-06-07 | 2021-09-03 | 苏州法兰克曼医疗器械有限公司 | Anastomat with high self-supporting stability during use |
| CN113331896B (en) * | 2021-06-07 | 2022-04-15 | 苏州法兰克曼医疗器械有限公司 | Anastomat with high self-supporting stability during use |
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