Electric anastomat with manual rollback structure

Abstract

An anastomat with a manual rollback structure comprises an electric driving assembly, a manual driving assembly, a clutch assembly, a driving main shaft, a percussion cam and an anastomosis assembly, the anastomat has an electric driving mode and a manual driving mode, the two modes are switched through the clutch assembly, the clutch assembly comprises a clutch shifting button, a clutch shifting piece and a clutch sleeve, and the clutch shifting piece is arranged on the clutch sleeve. The clutch shifting button drives the clutch sleeve to move up and down through the clutch shifting piece, so that the clutch shifting button is matched with the electric driving assembly and the manual driving assembly to enable the anastomat to work in an electric driving mode and a manual driving mode; in the two driving modes, the electric driving assembly and the manual driving assembly respectively output power to drive the main shaft and the percussion cam to complete percussion and retreat actions of the anastomosis assembly through the clutch sleeve. By means of the structure, when an electrical system breaks down, it can be guaranteed that an operation is completed smoothly, tissue damage is avoided, and operation cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, in particular to an electric anastomat with a manual back-off structure. BACKGROUND

[0002] In the prior art, in addition to the traditional manual anastomat, the electric anastomat has also been widely used. The electric anastomat reduces the working intensity of a doctor in surgery by introducing an electrical system, including a motor, a circuit, a battery, etc., to replace the manual firing operation of the doctor. If a motor fault, a circuit fault or a battery fault occurs during the firing process, the firing and the back-knife cannot be continued, which may cause damage to the tissue, and the anastomat needs to be replaced for surgery, which prolongs the surgery time and increases the cost. Therefore, how to continue the surgery in the case of a fault in the electrical system is a technical problem that needs to be solved in the field. SUMMARY

[0003] To solve the above technical problems, the technical solution provided by the utility model is as follows:

[0004] An anastomat with a manual back-off structure comprises an electric drive assembly, a manual drive assembly, a clutch assembly, a drive spindle, a firing cam and an anastomat assembly. The anastomat comprises an electric drive mode and a manual drive mode, and the two modes are switched by the clutch assembly. The clutch assembly comprises a clutch knob, a clutch tab and a clutch sleeve. The clutch knob drives the clutch sleeve to move up and down through the clutch tab, so as to cooperate with the electric drive assembly and the manual drive assembly respectively to make the anastomat work in the electric drive mode and the manual drive mode respectively. In the electric drive mode, the electric drive assembly outputs power through the clutch sleeve, the drive spindle and the firing cam to complete the firing and back-off actions of the anastomat assembly. In the manual drive mode, the manual drive assembly outputs power through the clutch sleeve, the drive spindle and the firing cam to complete the firing and back-off actions of the anastomat assembly.

[0005] Further, a convex semicircle ring is arranged on the clutch sleeve, and a groove is arranged on the clutch tab. The clutch sleeve and the clutch tab are fixed by cooperation of the convex semicircle ring and the groove. The clutch knob is fixed with the clutch tab by a shaft hole tight fit fixing mode.

[0006] Further, one end of the drive spindle comprises a drive spindle square column, the other end comprises a drive spindle outer key, and the middle part is a drive spindle light column. The firing cam comprises a square hole, the drive spindle square column is inserted into the square hole of the firing cam, and the drive spindle outer key is engaged with the inner key of the clutch sleeve, so that the clutch sleeve rotates to drive the drive spindle to rotate, and the drive spindle rotates to drive the firing cam to rotate.

[0007] Further, the electric drive assembly comprises a drive motor and a motor adapter shaft, the drive motor rotates to drive the motor adapter shaft to rotate, and the motor adapter shaft rotates to drive the clutch sleeve to rotate.

[0008] Further, the manual drive assembly comprises a manual worm gear and a manual worm, the manual worm gear and the manual worm are engaged, the manual worm gear is sleeved on the driving main shaft, the manual worm gear is provided with a plurality of grooves, the clutch sleeve is provided with a plurality of protrusions matched with the grooves, and the manual worm gear can drive the clutch sleeve to rotate when the protrusions are inserted into the grooves.

[0009] Further, the positioning assembly comprises a limiting rod and a spring, the spring is inserted into a circular inner hole of the firing cam, and the limiting rod is inserted into the spring.

[0010] Further, the anastomat further comprises a left support frame and a right support frame, and the drive motor is fixed on the left support frame and the right support frame.

[0011] Further, two rolling bearings are further arranged and mounted on the left support frame and the right support frame respectively, and the manual worm is inserted into the rolling bearings, and an end face bearing is further arranged on the manual worm.

[0012] Further, the anastomat is a tube type anastomat.

[0013] After the design is adopted, the anastomat has at least the following advantages:

[0014] (1) When the electric system fails, the manual drive assembly is used to complete the firing and back-off, so that the operation is successfully completed.

[0015] (2) Avoid tissue damage and shorten the operation time.

[0016] (3) The anastomat has simple structure, good effect, low cost and easy process implementation. DRAWINGS

[0017] The above is only a summary of the technical scheme of the anastomat, in order to more clearly understand the technical means of the anastomat, the anastomat will be further described in detail in combination with the drawings and the specific embodiments.

[0018] Figure 1 It is a schematic diagram of the overall shape of the anastomat of the present application;

[0019] Figure 2 It is a schematic diagram of the electric drive assembly and the manual drive assembly of the present application;

[0020] Figure 3The utility model discloses a motor adapter shaft schematic diagram;

[0021] Figure 4 The utility model discloses a firing cam and manual worm gear cooperation schematic diagram;

[0022] Figure 5 The utility model discloses a firing cam structure schematic diagram;

[0023] Figure 6 The utility model discloses a positioning assembly schematic diagram;

[0024] Figure 7 The utility model discloses a manual drive assembly schematic diagram;

[0025] Figure 8 The utility model discloses a manual worm gear structure schematic diagram;

[0026] Figure 9 The utility model discloses a clutch sleeve structure schematic diagram;

[0027] Figure 10 The utility model discloses a whole structure exploded schematic diagram;

[0028] The figure mark, 301 - left support frame, 302 - right support frame, 3021 - right support frame bearing support, 201 - drive motor, 202 - motor adapter shaft, 401 - clutch sleeve, 4011 - protruding, 402 - clutch paddle, 403 - clutch knob, 404 - clutch snap spring, 501 - sliding bearing, 502 - firing cam, 5021 - round inner hole, 5022 - square hole, 503 - spring, 504 - limit rod, 505 - drive main shaft, 5051 - drive main shaft square column, 5052 - drive main shaft outer key, 5053 - drive main shaft light column, 601 - manual worm gear, 6011 - recess, 6012 - slide chute, 602 - manual worm, 603 - rolling bearing, 604 - end face bearing DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] In this article, "up", "down" and the like are only used to represent the relative position relationship between the relevant parts, not to limit the absolute position of the relevant parts.

[0031] Referring to the drawings Figures 1-10The application discloses an anastomat with a manual back-off structure, which is a tube type anastomat and comprises an electric drive assembly, a manual drive assembly, a clutch assembly, a driving main shaft 505, a firing cam 502 and an anastomosis assembly, wherein the anastomat comprises an electric drive mode and a manual drive mode, and the two modes are switched through the clutch assembly, wherein the clutch assembly comprises a clutch knob 403, a clutch tab 402 and a clutch sleeve 401, the clutch knob 403 drives the clutch sleeve 401 to move up and down through the clutch tab 402, and is matched with the electric drive assembly and the manual drive assembly respectively to enable the anastomat to work in the electric drive mode and the manual drive mode respectively; in the electric drive mode, the electric drive assembly outputs power to complete the firing and back-off actions of the anastomosis assembly through the clutch sleeve 401, the driving main shaft 505 and the firing cam 502; and in the manual drive mode, the manual drive assembly outputs power to complete the firing and back-off actions of the anastomosis assembly through the clutch sleeve 401, the driving main shaft 505 and the firing cam 502.

[0032] The clutch sleeve 401 is provided with a convex semicircle ring, the clutch tab 402 is provided with a groove, the clutch sleeve 401 and the clutch tab 402 are fixed through cooperation of the convex semicircle ring and the groove, and the clutch knob 403 is fixed with the clutch tab 402 through a shaft hole tight fitting fixing mode; in addition, the clutch assembly further comprises a clutch snap spring 404 embedded on the clutch knob 403, when the clutch knob 403 is actuated, the clutch snap spring 404 provides elastic resistance, so that the clutch knob 403 is prevented from being actuated incorrectly under misoperation.

[0033] The driving main shaft 505 comprises a driving main shaft square column 5051 at one end, a driving main shaft outer spline 5052 at the other end and a driving main shaft light column 5053 in the middle, the firing cam 502 comprises a square hole 5022, the driving main shaft square column 5051 is inserted into the square hole 5022 of the firing cam, the driving main shaft outer spline 5052 is meshed with an inner spline of the clutch sleeve 401, so that the clutch sleeve 401 rotates to drive the driving main shaft 505 to rotate, and the driving main shaft 505 rotates to drive the firing cam 502 to rotate.

[0034] The electric drive assembly comprises a driving motor 201 and a motor adapter shaft 202. The driving motor 201 rotates to drive the motor adapter shaft 202 to rotate. The motor adapter shaft 202 rotates to drive the clutch sleeve 401 to rotate. Specifically, one end of the motor adapter shaft 202 is square-shaped and is inserted into a square-shaped hole of the driving motor 201. The other end of the motor adapter shaft 202 is an outer spline and is engaged with an inner spline of the clutch sleeve 401. Thus, when the driving motor 201 rotates, the motor adapter shaft 202 rotates, and the clutch sleeve 401 rotates. Further, the stapler further comprises a left support frame 301 and a right support frame 302. The driving motor 201 is fixed on the left support frame 301 and the right support frame 302. The right support frame 302 is provided with a right support frame bearing support 3021. A sliding bearing 501 is fixed on the right support frame bearing support 3021. A firing cam 502 is inserted into the sliding bearing 501. The sliding bearing 501 can play a lubricating role when the firing cam 502 rotates, thereby reducing the rotating resistance of the firing cam 502 and reducing the firing force required by the instrument.

[0035] The manual drive assembly comprises a manual worm gear 601 and a manual worm 602. The manual worm gear 601 and the manual worm 602 are engaged. The manual worm gear 601 is sleeved on the driving main shaft light column 5053. The manual worm gear 601 is provided with a plurality of grooves 6011. The clutch sleeve 401 is provided with a plurality of protrusions 4011 matched with the grooves. When the protrusions 4011 are inserted into the grooves 6011, the manual worm gear 601 can drive the clutch sleeve 401 to rotate. In addition, two rolling bearings 603 are arranged on the left support frame 301 and the right support frame 302, respectively. The manual worm 602 is inserted into the rolling bearings 603. An end face bearing 604 is arranged on the manual worm. The rolling bearings 603 are used to reduce the friction force generated by the axial force when the manual worm 602 rotates. The end face bearing 604 is used to reduce the friction force generated by the radial force when the manual worm 602 rotates, thereby reducing the driving force required to rotate the manual worm 602. The manual drive assembly further comprises a manual anastomosis tool. The manual anastomosis tool is inserted into the manual worm 602 to drive the manual worm 602 to rotate.

[0036] When the anastomat starts to work in the electric driving mode, the clutch sleeve 401 starts to rotate, thereby driving the firing cam 502 to move together, in this mode, the manual worm wheel 601 remains stationary because it is located on the driving spindle light column 5053 of the driving spindle 505, when the electric system fails, the driving motor 201 stops rotating, thereby the clutch sleeve 401 stops rotating, at this time, the position of the clutch sleeve 401 is random, so it cannot be guaranteed that the protrusions 4011 on the clutch sleeve 401 are aligned with the grooves 6011 on the manual worm wheel 601. In order to solve the above technical problems, the anastomat of the application further comprises a positioning assembly, the positioning assembly comprises a limiting rod 504 and a spring 503, the spring 503 is inserted into the circular inner hole 5021 of the firing cam 502; the limiting rod 504 is inserted into the spring 503; the limiting rod 504 can move up and down in the circular inner hole 5021 of the firing cam 502 under the action of the spring 503, the manual worm wheel 601 is provided with a slide groove 6012 matched with the positioning assembly; when the manual worm 602 is rotated, the manual worm wheel 601 is rotated, the limiting rod 504 enters the slide groove 6012 of the manual worm wheel 601, at this time, the manual worm 602 has obvious resistance and cannot be easily rotated, the alignment of the manual worm wheel 601 and the firing cam 502 is completed, since the positions of the firing cam 502 and the clutch sleeve 401 are fixed, the alignment of the manual worm wheel 601 and the clutch sleeve 401 is realized, at this time, the grooves 6011 on the manual worm wheel 601 are aligned and matched with the protrusions 4011 on the clutch sleeve 401. At this time, the clutch knob 403 is pushed to drive the clutch sleeve 401 to move upward, thereby disconnecting the motor driving shaft 202, and the protrusions 4011 can be inserted into the grooves 6011 on the manual worm wheel 601.

[0037] The working process of the anastomat with a manual back structure of the application is as follows: when the driving motor normally moves, the driving motor 201 drives the motor adapter shaft 202 to rotate; the motor adapter shaft 202 drives the clutch sleeve 401 to rotate; the clutch sleeve 401 drives the spindle 505 to rotate; the spindle 505 drives the firing cam 502 to rotate; the rotation of the firing cam 502 can complete the firing and back of the anastomosis assembly; at this time, the manual worm wheel 601 and the manual worm 602 are stationary.

[0038] When the electrical system fails, the drive motor cannot move, the manual worm 602 rotates the manual worm wheel 601, and the limiting rod 504 enters the slide chute 6012 of the manual worm wheel 601. At this time, the manual worm 602 has obvious resistance and cannot rotate easily, and the groove 6011 on the manual worm wheel 601 and the protrusion 4011 on the clutch sleeve 401 have completed the alignment and cooperation. Push the clutch knob 403 upwards, the clutch knob 403 drives the clutch sleeve 401 to move upwards, the clutch sleeve 401 is separated from the motor drive shaft 202; the protrusion 4011 on the clutch sleeve 401 is inserted into the groove 6011 on the manual worm wheel 601; rotate the manual anastomosis tool to drive the manual worm 602 to rotate; the manual worm 602 rotates to drive the manual worm wheel 601 to rotate; the manual worm wheel 601 rotates to drive the clutch sleeve 401 to rotate; the clutch sleeve 401 drives the main shaft 505 to rotate; the main shaft 505 drives the firing cam 502 to rotate; the firing cam 502 rotates to complete the firing and back of the anastomosis assembly.

[0039] The anastomat of the utility model can continue to complete firing, cutting and suturing tissues and return to the initial position when the electrical system fails, and can be used when the assembly cutting knife returns to the initial position. After the assembly cutting knife returns to the initial position, the instrument can be opened, the intestinal tract can be withdrawn, and the anastomosis can be completed. Thus, the operation can be smoothly completed, tissue damage can be avoided, and the operation time can be shortened.

[0040] Other embodiments of the utility model will be readily apparent to those skilled in the art after considering the utility model disclosed in the specification and embodiments. The present application is intended to cover any variations, uses or adaptive changes to the utility model that follow the general principles of the utility model and include common knowledge or conventional technical means in the technical field not disclosed by the utility model. The specification and embodiments are only considered as exemplary, and the true scope and spirit of the utility model are indicated by the claims.

[0041] It should be understood that the utility model is not limited to the precise structures described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims

1. A stapler with a manual retraction structure, comprising: An electric drive assembly, a manual drive assembly, a clutch assembly, a drive spindle, a firing cam and an anastomosis assembly, wherein the anastomosis apparatus includes an electric drive mode and a manual drive mode, and the two modes are switched through the clutch assembly, wherein the clutch assembly includes a clutch dial, a clutch paddle and a clutch sleeve, and the clutch dial drives the clutch sleeve to move up and down through the clutch paddle, thereby respectively cooperating with the electric drive assembly and the manual drive assembly to enable the anastomosis apparatus to operate in the electric drive mode and the manual drive mode respectively; in the electric drive mode, the electric drive assembly outputs power to complete the firing and retraction actions of the anastomosis assembly through the clutch sleeve, the drive spindle and the firing cam; in the manual drive mode, the manual drive assembly outputs power to complete the firing and retraction actions of the anastomosis assembly through the clutch sleeve, the drive spindle and the firing cam.

2. The stapler with a manual retraction structure according to claim 1, characterized in that: A raised semicircular ring is provided on the clutch sleeve, and a groove is provided on the clutch paddle. The clutch sleeve and the clutch paddle are fixed by the cooperation between the raised semicircular ring and the groove. The clutch paddle button is fixed to the clutch paddle by a tight fit with the shaft hole.

3. The stapler with a manual retraction structure according to claim 1, characterized in that: One end of the drive spindle includes a drive spindle square column, the other end includes a drive spindle external plum key, the middle is a drive spindle optical column, the firing cam includes a square hole, the drive spindle square column is inserted into the square hole of the firing cam, the drive spindle external plum key is engaged with the internal plum key of the clutch sleeve, so that the rotation of the clutch sleeve drives the drive spindle to rotate, and the rotation of the drive spindle drives the firing cam to rotate.

4. The stapler with a manual retraction structure according to any one of claims 1 to 3, characterized in that: The electric drive assembly includes a drive motor and a motor adapter shaft. The rotation of the drive motor drives the motor adapter shaft to rotate, and the rotation of the motor adapter shaft drives the clutch sleeve to rotate.

5. The stapler with a manual retraction structure according to claim 4, characterized in that: The manual drive assembly includes: a manual worm wheel and a manual worm, which are meshed with each other; the manual worm wheel is mounted on the driving spindle optical column; the manual worm wheel is provided with multiple grooves, and the clutch sleeve is provided with multiple protrusions that cooperate with the grooves. When the protrusions are inserted into the grooves, the rotation of the manual worm wheel can drive the clutch sleeve to rotate.

6. The stapler with a manual retraction structure according to claim 5, characterized in that: The positioning assembly includes a limit rod and a spring, the spring is inserted into the circular inner hole of the firing cam; the limit rod is inserted into the spring; the limit rod can move up and down in the circular inner hole of the firing cam under the action of the spring, and the manual worm gear is provided with a slide groove that cooperates with the positioning assembly.

7. The stapler with a manual retraction structure according to claim 5, characterized in that: The anastomosis device further comprises a left supporting frame and a right supporting frame, and the driving motor is fixed on the left supporting frame and the right supporting frame.

8. The stapler with a manual retraction structure according to claim 5, characterized in that: Two rolling bearings are also provided, which are respectively installed on the left support frame and the right support frame, and the manual worm is inserted into the rolling bearings; an end face bearing is also included, and the end face bearing is installed on the manual worm.

9. The stapler with a manual retraction structure according to any one of claims 1-3 and 5-8, characterized in that: The anastomosis device is a tubular anastomosis device.

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