CN211131289U

CN211131289U - Rotary cutter for minimally invasive breast surgery

Info

Publication number: CN211131289U
Application number: CN201921710617.7U
Authority: CN
Inventors: 高寒; 李达学
Original assignee: CHONGQING HEALTH CENTER FOR WOMEN AND CHILDREN
Current assignee: CHONGQING HEALTH CENTER FOR WOMEN AND CHILDREN
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-07-31
Anticipated expiration: 2029-10-11

Abstract

The utility model discloses a rotary-cut sword is used in mammary gland minimal access surgery, be provided with the roll adjustment subassembly on the rotary-cut sword cutter body, the rotary-cut sword cutter body includes handle of a knife, knife tip, blade and roll adjustment subassembly, the tip of handle of a knife is provided with the jack, the slidable of knife tip one end is inserted and is established in the jack, first sword groove has been seted up on the lateral wall of handle of a knife, the second sword groove has been seted up on the lateral wall of knife tip, just first sword groove with the second sword groove sets up relatively, the blade covers first sword groove with on the second sword groove, the roll adjustment subassembly sets up on the knife tip, and extend to in the handle of a knife, the roll adjustment subassembly can promote the knife tip is to being close to or keeping away from the direction slip of handle of a knife, thereby change first sword groove with distance between the second sword groove with the length of blade. The rotary cutter is suitable for cutting breast tumors with different diameters.

Description

Rotary cutter for minimally invasive breast surgery

Technical Field

The utility model relates to the field of medical equipment, concretely relates to rotary-cut sword is used in mammary gland minimal access surgery.

Background

Clinically, there are two existing breast tumor resections, one of which is a traditional mastectomy: the method is characterized in that a wound is formed in a breast, a scalpel is extended into the breast through the wound to cut off a tumor, and the tumor is taken out through the wound after the tumor is cut off; in addition, the minimally invasive rotary cutting of the breast tumor is adopted in another mode, such as the MAIMITONG vacuum-assisted minimally invasive rotary cutting system of the breast tumor and the velcade minimally invasive rotary cutting of the breast tumor, a cutter groove with the depth of 3-5mm and the length of 20mm is arranged on the side wall of a cutter point of a rotary cutter of the minimally invasive rotary cutting, and a blade is covered on the cutter groove. A miniature wound of 3-5mm is directly cut on breast during operation, the rotary cutter for operation is extended into breast to cut tumor in rotary mode, the tumor is sucked into the cutter groove by attraction force, then the tumor is cut into a cylindrical body of 3-5mm in thickness by the rotary cutter and is conveyed out of the body by a corresponding conveyor belt, and the tumor can be completely cut off by 3-5 times of cutting. However, this approach has the following disadvantages: the length of the cutter groove of the existing rotary cutter is generally about 20 mm. However, when a small tumor is resected, the length of the fixed knife slot is too large, so that the tumor is not easy to be positioned in an auxiliary way, and when the tumor is cut, a large amount of normal breast tissue can be resected and damaged. Meanwhile, when the tumor is large, because the length of the cutter groove is only about 2cm, the tumor with the diameter larger than 2cm can be cut off in a rotary cutting process, the tumor is not easy to be completely cut off, an operating doctor has to move the rotary cutting knife again to adjust the position, and the non-cut part is cut off again in a mode of supplementing the knife again, so that the operation of the doctor is increased, the operation time is prolonged, the tumor residue is easy to occur, and the pain of a patient is increased.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the utility model provides a rotary cutter for minimally invasive mammary gland surgery with adjustable cutter groove length, which is suitable for cutting the mammary gland tumors with different diameters.

In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides a rotary-cut sword is used in mammary gland minimal access surgery, be provided with the roll adjustment subassembly on the rotary-cut sword cutter body, the rotary-cut sword cutter body includes handle of a knife, knife tip, blade and roll adjustment subassembly, the tip of handle of a knife is provided with the jack, what knife tip one end was slided inserts and establishes in the jack, first sword groove has been seted up on the lateral wall of handle of a knife, the second sword groove has been seted up on the lateral wall of knife tip, just first sword groove with the second sword groove sets up relatively, the blade covers first sword groove with on the second sword groove, the roll adjustment subassembly sets up on the knife tip, and extend to in the handle of a knife, the roll adjustment subassembly can promote the knife tip is to being close to or keeping away from the direction of handle of a knife slides, thereby changes first sword groove with distance between the second sword groove with the length of blade.

Furthermore, one end of the blade is fixed on the side wall of the first cutter groove, and the other end of the blade can be inserted into the side wall of the second cutter groove in a sliding mode.

Further, the roll adjustment subassembly includes push rod, action wheel and driven lever, be provided with the guiding hole in the handle of a knife, and the guiding hole with the jack communicates with each other, the one end of push rod can the pivoted setting be in the knife tip, other one end is passed the jack extends to in the guiding hole, the push rod is located tip setting in the jack the driven lever, be provided with the tooth on the driven lever, the mounting groove has been seted up to the lateral wall of handle of a knife, the action wheel can the pivoted setting be in the mounting groove, just one side of action wheel stretches into in the handle of a knife, and with on the driven lever tooth meshing.

Further, the driving wheel is a worm wheel, and the driven rod is a worm.

Furthermore, the side wall of the jack is provided with a protrusion, a groove is formed in the position, opposite to the protrusion, of the tool nose, and the protrusion is clamped in the groove.

Furthermore, a telescopic sleeve is arranged between the contact surface of the tool nose and the tool shank.

The rotary cutter for minimally invasive breast surgery at least comprises the following advantages:

according to the rotary cutter for minimally invasive mammary gland surgery, the cutter point is inserted into the cutter handle, the distance between the first cutter groove and the second cutter groove can be changed and the length of the cutter blade can be changed through the distance adjusting assembly, so that the total length of the first cutter groove and the second cutter groove and the length of the cutter blade can be matched with the diameter of a tumor, and the phenomenon that the cutter has to be supplemented because the diameter of the tumor is too large and cannot be cut at one time in the primary cutting process can be avoided.

Drawings

FIG. 1 is a schematic view of a prior art rotary cutter positioned between the rotary cutter and a tumor;

FIG. 2 is a schematic view of a rotary cutter for minimally invasive breast surgery according to the embodiment;

FIG. 3 is a schematic view of the tool tip and tool shank of FIG. 1 in a separated state;

reference numerals: 10-a rotary cutter for minimally invasive mammary gland surgery, 1-a rotary cutter body, 2-a tumor, 100-a cutter handle, 110-a jack, 120-a first cutter groove, 130-a guide hole, 140-a bulge, 200-a cutter tip, 210-a second cutter groove, 300-a blade, 400-a distance adjusting component, 410-a push rod, 420-a driving wheel, 430-a driven wheel and 500-a telescopic sleeve.

Detailed Description

Referring to fig. 1 and 3, a rotary cutter for minimally invasive breast surgery. Comprises a rotary cutter body 1. The rotary cutter body 1 is provided with a distance adjusting assembly 400, and the rotary cutter body 1 comprises a cutter handle 110, a cutter point 200, a blade 300 and the distance adjusting assembly 400. The end of the shank 110 is provided with a socket 110. One end of the blade tip 200 is slidably inserted into the insertion hole 110. The side wall of the knife handle 110 is provided with a first knife groove 120. The side wall of the knife tip 200 is provided with a second knife groove 210, and the first knife groove 120 and the second knife groove 210 are oppositely arranged. The blade 300 overlies the first and

second pockets

120, 210. The pitch assembly 400 is disposed on the tool tip 200 and extends into the tool shank 110. The distance adjustment assembly 400 can push the tool tip 200 to slide toward or away from the tool holder 110, thereby changing the distance between the first and

second tool pockets

120 and 210 and changing the exposed length of the blade 300. During operation, firstly, a 3-5MM wound is cut on a breast, then, the distance between the knife tip 200 and the knife handle 110 is adjusted by adjusting the distance adjusting assembly 400 according to the size of a tumor 2, the distance between the first knife groove 120 and the second knife groove 210 is adjusted, the exposed length of the blade 300 is changed, the total length of the first knife groove 120 and the second knife groove 210 and the length of the blade 300 are matched with the diameter of the tumor 2, finally, an operator holds the knife handle 110 by hand, inserts one end of the knife tip 200 into the tumor 2 in the breast from the wound, rotates the knife handle 110, and rotationally cuts the tumor 2 through the blade 300.

Specifically, the distance adjustment assembly 400 includes a push rod 410, a driving wheel 420, and a driven rod 430. A guide hole 130 is provided in the tool shank 110, and the guide hole 130 communicates with the insertion hole 110. One end of the push rod 410 is rotatably disposed in the lancet tip 200, and the other end thereof extends into the guide hole 130 through the insertion hole 110. The end of the push rod 410 within the receptacle 110 is provided with a driven rod 430. The driven rod 430 is provided with teeth. The side wall of the knife handle 110 is provided with a mounting groove. The driving wheel 420 is rotatably disposed in the mounting groove, and one side of the driving wheel 420 extends into the tool holder 110 and is engaged with the teeth of the driven rod 430. In this embodiment, the driving wheel 420 is preferably a worm wheel, and the driven rod 430 is preferably a worm, thereby constituting a worm wheel and worm fit. Of course, in other embodiments, the driving wheel 420 can be a gear, and the driven rod 430 can be a rack, as long as the driving rod 410 can be driven to move the pushing rod 410 away from or close to the tool shank 110. When the worm wheel is rotated, the worm wheel drives the worm to move back and forth along the guide hole 130, thereby pushing the push rod 410 and the knife tip 200 to move away from or close to the knife handle 110, thereby changing the distance between the first knife groove 120 and the second knife groove 210 and changing the exposed length of the blade 300.

In the present embodiment, the blade 300 is fixed at one end to a sidewall of the first blade groove 120. The other end of the insert 300 is slidably inserted into the sidewall of the second pocket 210. Of course, one end of the blade 300 may be fixed to the sidewall of the second pocket 210, and the other end of the blade 300 may be slidably inserted into the sidewall of the first pocket 120. As long as one end of the blade 300 is secured in the active state.

In the present embodiment, in order to prevent the cutting tip 200 from rotating during use, the relative position between the first pocket 120 and the second pocket 210 is changed, thereby causing the insert 300 to be twisted, and a protrusion 140 is provided at the sidewall of the insertion hole 110. The cutting tip 200 is provided with a groove at a position opposite to the protrusion 140. And the protrusion 140 is snapped into the groove. The rotation of the tip 200 is limited by the cooperation of the protrusion 140 and the groove.

Meanwhile, a telescopic sleeve 500 is provided between the contact surfaces of the cutting tip 200 and the tool holder 110. The telescopic sleeve 500 connects the gap between the cutting tip 200 and the tool holder 110, and increases the overall shape between the cutting tip 200 and the tool holder 110.

The specific use method of the rotary cutter 10 for minimally invasive breast surgery comprises the following steps: during operation, firstly, a 3-5MM wound is cut on a breast, then, according to the size of the tumor 2, the worm wheel is rotated, the worm wheel drives the worm to move back and forth along the guide hole 130, so that the push rod 410 and the tool nose 200 are pushed to move away from or close to the tool holder 110, the distance between the first tool groove 120 and the second tool groove 210 is changed, the length of the blade 300 is changed, the total length of the first tool groove 120 and the second tool groove 210 and the length of the blade 300 are matched with the diameter of the tumor 2, finally, an operator holds the tool holder 110 by hand, one end of the tool nose 200 is inserted into the tumor 2 in the breast from the wound, the tool holder 110 is rotated, and the tumor 2 is cut into a column shape through. The cylindrical slices cut off by the knife handle 110 are conveyed to the outside of the body by the conveying belt which is inherent in the knife handle, and the whole tumor 2 can be cut by cutting for many times.

According to the rotary scalpel 10 for minimally invasive mammary gland surgery, the tool nose 200 is inserted into the tool handle 110, the distance between the first tool groove 120 and the second tool groove 210 can be changed and the length of the blade 300 can be changed through the adjustment of the worm gear and the worm of the distance adjusting assembly 400, namely, the total length of the first tool groove 120 and the second tool groove 210 and the length of the blade 300 can be matched with the diameter of the tumor 2, and in the rotary cutting process, the phenomenon that the tumor 2 cannot be cut off at one time and cannot be repaired due to the fact that the diameter of the tumor 2 is too large in one cutting process can be avoided. The protrusion 140 is engaged with the groove to limit the rotation of the cutting tip 200, and the telescopic sleeve 500 connects the cutting tip 200 with the notch of the tool holder 110, thereby increasing the overall shape between the cutting tip 200 and the tool holder 110.

Finally, it should be noted that: the basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A rotary cutter for minimally invasive mammary gland surgery comprises a rotary cutter body and is characterized in that a distance adjusting component is arranged on the rotary cutter body, the rotary cutter body comprises a cutter handle, a cutter point, a blade and a distance adjusting component, the end part of the cutter handle is provided with an insertion hole, one end of the knife tip is inserted into the jack in a sliding way, a first knife groove is arranged on the side wall of the knife handle, a second knife groove is arranged on the side wall of the knife tip, the first cutter groove and the second cutter groove are oppositely arranged, the blade covers the first cutter groove and the second cutter groove, the distance adjusting component is arranged on the blade tip, and extends into the tool handle, the distance adjusting component can push the tool tip to slide towards the direction close to or far away from the tool handle, thereby changing the distance between the first and second pockets and changing the length of the insert.

2. The rotary cutter for minimally invasive mammary gland surgery according to claim 1, wherein one end of the blade is fixed on the side wall of the first cutter groove, and the other end of the blade is slidably inserted into the side wall of the second cutter groove.

3. The rotary shaver according to claim 1, wherein the distance-adjusting assembly comprises a push rod, a driving wheel and a driven rod, a guide hole is formed in the shaver handle, the guide hole is communicated with the insertion hole, one end of the push rod is rotatably disposed in the shaver tip, the other end of the push rod penetrates through the insertion hole and extends into the guide hole, the driven rod is disposed at the end portion of the push rod located in the insertion hole, teeth are disposed on the driven rod, an installation groove is formed in the side wall of the shaver handle, the driving wheel is rotatably disposed in the installation groove, and one side of the driving wheel extends into the shaver handle and is engaged with the teeth on the driven rod.

4. The rotary shaver according to claim 3, wherein the driving wheel is a worm wheel, and the driven rod is a worm.

5. The rotary shaver according to claim 1, wherein the side wall of the insertion hole is provided with a protrusion, the knife tip is provided with a groove corresponding to the protrusion, and the protrusion is engaged with the groove.

6. The rotary shaver according to claim 1, wherein a telescopic sleeve is provided between the knife tip and the contact surface of the knife handle.