Anastomat and supporting structure of power output mechanism of anastomat

Abstract

The invention relates to the technical field of anastomats, in particular to an anastomat and a supporting structure of an anastomat power output mechanism. The anti-torsion device comprises an anti-torsion support arranged in an anastomat shell, the anti-torsion support is located at the power output end of the anastomat, a first supporting hole, a second supporting hole and a lead screw positioning hole are formed in the anti-torsion support, the first supporting hole is formed in the lower portion of the anti-torsion support and used for supporting the supporting end of a first-stage gear, and the second supporting hole is formed in the lower portion of the anti-torsion support and used for supporting the supporting end of a second-stage gear. The second supporting hole is formed in the middle of the anti-torsion support and used for supporting the first-stage lead screw and the second-stage gear. The lead screw positioning hole is formed in the upper portion of the anti-torque support, and the second-stage lead screw is arranged in the lead screw positioning hole in a penetrating mode. The supporting and fixing functions of the first-stage lead screw, the second-stage lead screw, the second-stage gear and the first-stage gear are integrated on the torsion-resistant support, the internal structure of the anastomat is simplified, all parts of a power output mechanism can be well supported, and damage or deformation of all the parts of the power output mechanism caused by torsion force release is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of staplers, and in particular to a stapler and a supporting structure of a stapler power output mechanism. Background Art

[0002] Stapler is a medical device that replaces manual suturing. It has the advantages of fast suturing and simple operation. Stapler can be divided into circular stapler, laparoscopic stapler, arc stapler, etc. The appropriate type can be selected according to the needs of the patient.

[0003] In the prior art, there have been staplers specifically designed for large-sized tissues or organs. The principle of this stapler is similar to that of a traditional laparoscopic stapler, but the structure of the stapler assembly at the front end of the product is quite different from that of the laparoscopic stapler, and the entire volume of the product has also increased a lot, so it is easy to distinguish it from the laparoscopic stapler. When working, this large-volume stapler drives the lead screw to rotate through a motor, thereby driving the cutting knife to cut large-sized tissues or organs, while the stapler assembly at the front end sutures the retained tissues or organs. When this stapler is cutting and suturing, the motor driving the lead screw transmission will bring a large torsional force, which will be released to the power output mechanism of the stapler, and then transmitted to the stapler housing through the power output mechanism. Since the stapler housing is a plastic part, its support strength for the power output mechanism is poor, so the torsional force is easy to cause structural damage to the stapler housing, and also causes the power output mechanism to deform, affecting the stability of the power output of the stapler and affecting the normal work during the cutting and stapling process. Summary of the invention

[0004] In response to the shortcomings in the above-mentioned existing production technology, the present application provides a support structure for a stapler and a power output mechanism of the stapler, which can well support the various components of the power output mechanism, prevent the release of torsional force from causing damage or deformation to the various components of the power output mechanism, ensure the use of the stapler, and ensure the surgical effect.

[0005] The technical solution adopted by the present invention is as follows: A support structure for a stapler power output mechanism comprises an anti-torsion bracket arranged in a stapler housing, the anti-torsion bracket being located at the power output end of the stapler, a first support hole, a second support hole and a screw rod positioning hole being respectively arranged on the anti-torsion bracket, the first support hole being arranged at the lower part of the anti-torsion bracket for supporting the support end of a primary gear, the second support hole being arranged at the middle part of the anti-torsion bracket for supporting a primary screw rod and a secondary gear, the positions of the first support hole and the second support hole being arranged to ensure meshing connection between the primary gear and the secondary gear; the screw rod positioning hole being arranged at the upper part of the anti-torsion bracket, and a secondary screw rod being arranged through the screw rod positioning hole.

[0006] Furthermore, the first-stage gear includes a supporting end and a driving end, the supporting end of the first-stage gear is located in the first supporting hole, and the driving end of the first-stage gear is connected to the driving end of the first motor through a first coupling.

[0007] Furthermore, the secondary gear includes a first supporting end and a second supporting end. The first supporting end of the secondary gear is located in the second supporting hole. The first supporting end of the secondary gear and the driving end of the primary screw are connected for transmission. A gear bracket is arranged on one side of the second supporting end of the secondary gear. A gear positioning groove is arranged in the gear bracket. The gear positioning groove forms a support for the second supporting end of the secondary gear. The side of the gear bracket is positioned to contact the second supporting end of the secondary gear.

[0008] Furthermore, the second supporting hole is a stepped hole, and the second supporting hole includes a first hole segment and a second hole segment arranged in sequence, the diameter of the first hole segment is smaller than the diameter of the second hole segment, and a positioning end face is formed at the connection between the first hole segment and the second hole segment, and the first supporting end of the secondary gear is located in the second hole segment and the side surface of the first supporting end of the secondary gear is positioned to contact the positioning end face.

[0009] Furthermore, a bushing is arranged in the second supporting hole, and the driving end of the first-stage screw rod passes through the bushing and is connected to the first supporting end of the second-stage gear.

[0010] Furthermore, the driving end of the secondary screw is connected to the driving end of the second motor through a second coupling, and the supporting end of the secondary screw is rotatably connected in the anastomosis device housing.

[0011] Furthermore, the anti-torsion bracket includes an upper bracket and a lower bracket which are correspondingly arranged up and down.

[0012] Furthermore, the first support hole includes a semicircular first upper support hole set on the upper bracket and a semicircular first lower support hole set on the lower bracket, and the first upper support hole and the first lower support hole are connected up and down to form a circular first support hole, and the second support hole includes a semicircular second upper support hole set on the upper bracket and a semicircular second lower support hole set on the lower bracket, and the second upper support hole and the second lower support hole are connected up and down to form a circular second support hole.

[0013] Furthermore, the screw rod positioning hole includes a semicircular upper screw rod positioning hole arranged on the upper bracket and a semicircular lower screw rod positioning hole arranged on the lower bracket. The upper screw rod positioning hole and the lower screw rod positioning hole are connected up and down to form a circular screw rod positioning hole.

[0014] A stapler comprises a stapler housing, wherein a supporting structure of a stapler power output mechanism as claimed in any one of claims 1 to 9 is arranged inside the stapler housing.

[0015] The beneficial effects of the present invention are as follows: The present invention integrates the supporting and fixing functions of the primary screw rod, the secondary screw rod, the secondary gear and the primary gear into the anti-torsion bracket, simplifies the internal structure of the stapler, can well support the various components of the power output mechanism, prevent the release of the torsional force from causing damage or deformation to the various components of the power output mechanism, ensure the use of the stapler, and ensure the surgical effect; the second support hole set on the anti-torsion bracket can not only provide support for the secondary gear, but also control the secondary gear and the secondary screw rod from moving forward and backward under the action force during movement, thereby ensuring stability during cutting; the first support hole set on the anti-torsion bracket can provide stable support for the primary gear; the screw rod positioning hole set on the anti-torsion bracket can prevent the deformation of the secondary screw rod caused by the torsional force, thereby ensuring normal transmission of the secondary screw rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the installation of the present invention.

[0017] Figure 2 It is a schematic diagram of the structure of the present invention.

[0018] Figure 3 It is a structural diagram of the power output mechanism of the present invention.

[0019] Figure 4 This is a structural diagram of the anti-torsion bracket of the present invention.

[0020] Figure 5 This is a diagram showing the internal structure of the torsion-resistant bracket of the present invention.

[0021] Among them: 1. primary screw; 2. first coupling; 3. first motor; 4. secondary screw; 5. second coupling; 6. second motor; 7. primary gear; 8. secondary gear; 9. anti-torsion bracket; 10. mounting plate; 11. motor fixing plate; 12. slot; 13. stapler housing; 14. gear bracket; 15. first hole section; 16. second hole section; 17. bushing; 18. upper bracket; 19. lower bracket; 20. first support hole; 21. second support hole; 22. screw positioning hole. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is described below in conjunction with the accompanying drawings.

[0023] like Figure 1 and Figure 2As shown, a support structure of a stapler power output mechanism includes an anti-torsion bracket 9 arranged in a stapler housing 13, and the anti-torsion bracket 9 is located at the power output end of the stapler. The stapler housing 13 is provided with a power output mechanism, and the power output mechanism includes a first motor 3, a second motor 6, a primary screw rod 1, a secondary screw rod 4, a primary gear 7, a secondary gear 8, a first coupling 2 and a second coupling 5, wherein the primary screw rod 1, the secondary screw rod 4, the primary gear 7 and the secondary gear 8 are supported by the anti-torsion bracket 9.

[0024] like Figure 1 and Figure 2 As shown, the anti-torsion bracket 9 is detachably connected to the mounting plate 10 via a plurality of bolts, and the mounting plate 10 is detachably connected to the stapler housing 13 via a plurality of bolts.

[0025] like Figure 3 and Figure 4 As shown, the first support hole 20, the second support hole 21 and the screw rod positioning hole 22 are respectively provided on the anti-torsion bracket 9. The first support hole 20 is provided at the lower part of the anti-torsion bracket 9 to support the support end of the primary gear 7. The second support hole 21 is provided in the middle part of the anti-torsion bracket 9 to support the primary screw rod 1 and the secondary gear 8. The positions of the first support hole 20 and the second support hole 21 can ensure the meshing connection between the primary gear 7 and the secondary gear 8. The screw rod positioning hole 22 is provided at the upper part of the anti-torsion bracket 9. The secondary screw rod 4 is penetrated in the screw rod positioning hole 22, and the secondary screw rod 4 is supported by the screw rod positioning hole 22.

[0026] like Figure 3 As shown, the primary gear 7 includes a supporting end and a driving end. The supporting end of the primary gear 7 is located in the first supporting hole 20. The driving end of the primary gear 7 is connected to the driving end of the first motor 3 through the first coupling 2. When the first motor 3 is working, the primary gear 7 is driven to rotate through the first coupling 2. The first motor 3 is detachably connected to the motor fixing plate 11 through a plurality of bolts. The motor fixing plate 11 is inserted into the slot 12, and the slot 12 is set in the stapler housing 13.

[0027] like Figure 3 As shown, the secondary gear 8 includes a first supporting end and a second supporting end, the first supporting end of the secondary gear 8 is located in the second supporting hole 21, and the first supporting end of the secondary gear 8 is connected to the driving end of the primary screw 1 for transmission. A gear bracket 14 is provided on one side of the second supporting end of the secondary gear 8, and a gear positioning groove is provided in the gear bracket 14. The gear positioning groove forms a support for the second supporting end of the secondary gear 8, and the gear positioning groove cooperates with the second supporting hole 21 to form a balanced support for both ends of the secondary gear 8, so that the secondary gear 8 is installed more firmly. The gear bracket 14 is positioned on the side to contact the second supporting end of the secondary gear 8, forming an axial positioning of the secondary gear 8 to prevent the axial movement of the secondary gear 8 during the transmission process.

[0028] like Figure 5 As shown, the second support hole 21 is a stepped hole, and the second support hole 21 includes a first hole segment 15 and a second hole segment 16 arranged in sequence. The diameter of the first hole segment 15 is smaller than the diameter of the second hole segment 16. Due to the difference in diameter, a positioning end face is formed at the connection between the first hole segment 15 and the second hole segment 16. The first support end of the secondary gear 8 is located in the second hole segment 16 and the side surface of the first support end of the secondary gear 8 is positioned to contact the positioning end face, thereby forming axial positioning of the secondary gear 8 to avoid axial movement of the secondary gear 8 during the transmission process.

[0029] like Figure 3 and Figure 4 As shown, a bushing 17 is arranged in the second supporting hole 21 , and the driving end of the primary screw rod 1 passes through the bushing 17 and is connected to the first supporting end of the secondary gear 8 . The bushing 17 can reduce the wear of the driving end of the primary screw rod 1 in the second supporting hole 21 .

[0030] like Figure 3 and Figure 4 As shown, the driving end of the secondary screw 4 is connected to the driving end of the second motor 6 through the second coupling 5, and the supporting end of the secondary screw 4 is rotatably connected in the stapler housing 13. The second motor 6 is detachably connected to the motor fixing plate 11 through a plurality of bolts, and the motor fixing plate 11 realizes stable support for the second motor 6.

[0031] like Figure 4 and Figure 5 As shown, the anti-torsion bracket 9 includes an upper bracket 18 and a lower bracket 19 which are correspondingly arranged up and down. The upper bracket 18 and the lower bracket 19 are correspondingly arranged up and down and connected into one by a plurality of bolts.

[0032] The first support hole 20 includes a semicircular first upper support hole provided on the upper bracket 18 and a semicircular first lower support hole provided on the lower bracket 19 . The first upper support hole and the first lower support hole are connected up and down to form a circular first support hole 20 .

[0033] The second support hole 21 includes a semicircular second upper support hole provided on the upper bracket 18 and a semicircular second lower support hole provided on the lower bracket 19 . The second upper support hole and the second lower support hole are connected up and down to form a circular second support hole 21 .

[0034] The screw rod positioning hole 22 includes a semicircular upper screw rod positioning hole provided on the upper bracket 18 and a semicircular lower screw rod positioning hole provided on the lower bracket 19 . The upper screw rod positioning hole and the lower screw rod positioning hole are butted up and down to form a circular screw rod positioning hole 22 .

[0035] The stapler used in the present invention is used for the separation and anastomosis of larger human organ tissues. This is because such larger human organ tissues often require a large power to drive to complete the separation and anastomosis, so a large torsional force will be generated during the transmission process. The support structure of the present invention can well support the various components of the power output mechanism, prevent the release of torsional force from causing damage or deformation to the various components of the power output mechanism, ensure the use of the stapler, and ensure the surgical effect. The support structure of the present invention is mainly composed of an anti-torsion bracket 9. The second support hole 21 set on the anti-torsion bracket 9 can not only provide stable support for the secondary gear 8, but also control the secondary gear 8 and the secondary screw 4 from moving forward and backward under the action force during movement, thereby ensuring stability during cutting. The first support hole 20 set on the anti-torsion bracket 9 can provide stable support for the primary gear 7; the screw positioning hole 22 set on the anti-torsion bracket 9 can prevent the deformation of the secondary screw 4 caused by the torsional force, thereby ensuring the normal transmission of the secondary screw 4. The second support hole 21 provided on the anti-torsion bracket 9 not only provides support for the secondary gear 8, but also controls the secondary gear 8 and the secondary screw rod 4 so that they will not move forward and backward under the action force during movement, thereby ensuring stability during cutting.

[0036] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A support structure for a stapler power output mechanism, characterized in that: It includes an anti-torsion bracket arranged in the anastomosis device housing, the anti-torsion bracket is located at the power output end of the anastomosis device, and a first supporting hole, a second supporting hole and a screw positioning hole are respectively arranged on the anti-torsion bracket. The first supporting hole is arranged at the lower part of the anti-torsion bracket to support the supporting end of the primary gear, and the second supporting hole is arranged in the middle part of the anti-torsion bracket to support the primary screw and the secondary gear. The position setting of the first supporting hole and the second supporting hole can ensure the meshing connection between the primary gear and the secondary gear; the screw positioning hole is arranged at the upper part of the anti-torsion bracket, and the secondary screw is arranged through the screw positioning hole.

2. A support structure for a stapler power output mechanism according to claim 1, characterized in that: The primary gear comprises a supporting end and a driving end. The supporting end of the primary gear is located in the first supporting hole, and the driving end of the primary gear is connected to the driving end of the first motor through a first coupling.

3. A support structure for a stapler power output mechanism according to claim 2, characterized in that: The secondary gear includes a first supporting end and a second supporting end. The first supporting end of the secondary gear is located in the second supporting hole. The first supporting end of the secondary gear is connected to the driving end of the primary screw for transmission. A gear bracket is arranged on one side of the second supporting end of the secondary gear. A gear positioning groove is arranged in the gear bracket. The gear positioning groove forms a support for the second supporting end of the secondary gear. The side of the gear bracket is positioned to contact the second supporting end of the secondary gear.

4. A support structure for a stapler power output mechanism as claimed in claim 3, characterized in that: The second supporting hole is a stepped hole, and the second supporting hole includes a first hole segment and a second hole segment arranged in sequence. The diameter of the first hole segment is smaller than the diameter of the second hole segment. A positioning end face is formed at the connection between the first hole segment and the second hole segment. The first supporting end of the secondary gear is located in the second hole segment and the side surface of the first supporting end of the secondary gear is positioned to contact the positioning end face.

5. A support structure for a stapler power output mechanism as claimed in claim 4, characterized in that: A bushing is arranged in the second supporting hole, and the driving end of the first-stage screw rod passes through the bushing and is connected to the first supporting end of the second-stage gear.

6. A support structure for a stapler power output mechanism according to claim 5, characterized in that: The driving end of the secondary screw rod is connected to the driving end of the second motor through a second coupling, and the supporting end of the secondary screw rod is rotatably connected in the anastomosis device housing.

7. A support structure for a stapler power output mechanism according to claim 6, characterized in that: The anti-torsion bracket comprises an upper bracket and a lower bracket which are arranged correspondingly up and down.

8. A support structure for a stapler power output mechanism according to claim 7, characterized in that: The first support hole includes a semicircular first upper support hole set on the upper bracket and a semicircular first lower support hole set on the lower bracket, and the first upper support hole and the first lower support hole are connected up and down to form a circular first support hole, and the second support hole includes a semicircular second upper support hole set on the upper bracket and a semicircular second lower support hole set on the lower bracket, and the second upper support hole and the second lower support hole are connected up and down to form a circular second support hole.

9. A support structure for a stapler power output mechanism according to claim 8, characterized in that: The screw rod positioning hole comprises a semicircular upper screw rod positioning hole arranged on the upper bracket and a semicircular lower screw rod positioning hole arranged on the lower bracket. The upper screw rod positioning hole and the lower screw rod positioning hole are butted up and down to form a circular screw rod positioning hole.

10. A stapler, characterized in that: It comprises a stapler housing, in which a supporting structure of a stapler power output mechanism as claimed in any one of claims 1 to 9 is arranged.

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