CN113229890A - Push-pull type composite breast tissue stripper - Google Patents

Abstract

The invention relates to the field of surgical plastic medical equipment, in particular to a push-pull type composite breast tissue stripper. The peeling device comprises a wedge-shaped peeling head, wherein the front end of the peeling head is a peeling part, and the rear end of the peeling head is fixedly provided with an operating handle; the peeling head is of a hollow structure and is provided with two wing parts with openable front ends, and the front ends of the two wing parts are closed under a normal state so as to carry out blunt peeling operation through the closed front ends of the two wing parts; the peeling head is provided with an expansion control mechanism, and the front ends of the two wing parts can be controlled to be opened and closed in a reciprocating manner through the expansion control mechanism so as to carry out expansion type peeling operation; the inner cavity of the stripping head is also provided with a cutting knife, the operating handle is provided with a cutting control mechanism for controlling the cutting knife to extend out from the opened wing part, and the cutting type stripping operation can be carried out through the cutting knife extending out from the wing part. The invention can select the optimal stripping mode according to the bonding strength between the skin and the subcutaneous tissue, shorten the stripping operation time and reduce the pain of patients.

Description

Push-pull type composite breast tissue stripper

The patent application of the invention is a divisional application with application number 2020105243359, the application date of the original application is 6/10/2020, and the invention has the inventive name: a blunt, expanding and cutting type breast stripper.

Technical Field

The invention relates to the field of surgical plastic medical equipment, in particular to a push-pull type composite breast tissue stripper.

Background

In the female breast enlarging and beautifying or accident breast shaping and filling operation, an incision is needed to be arranged on the periphery of a breast, then a breast stripper is extended into the breast from the incision to strip the epidermis and the subcutaneous tissue, a containing cavity with proper size is formed between the epidermis and the subcutaneous tissue, and finally a filling prosthesis is implanted into the containing cavity from the incision and is sewn.

The prior art breast dissectors are structurally and functionally diverse, with the U-shaped dissectors being most common structurally. The tail ends of two stripping arms of the U-shaped stripper are both provided with arc blunt heads, wherein one stripping arm is a straight arm, and the other stripping arm is provided with a specific angle. In the breast stripping process, one stripping arm extends into the position between the breast epidermis and the subcutaneous tissue from the incision, and an operator holds the other stripping arm and the connecting part between the two stripping arms for stripping. In the clinical peeling process, because part of muscles or tissues are closely adhered to the epidermis, when the blunt head on the peeling arm moves to the position with larger resistance, peeling is difficult to be carried out only through the blunt head, so that not only is a great deal of manpower consumed by an operator, but also stress points are easy to form at the incision position, the incision is enlarged to cause the expansion of a sutured scar, and the aim of micro-plastic cannot be achieved. Moreover, even after a large amount of operation time and labor are consumed, the site having a large adhesion force cannot be peeled off smoothly, and only the stripper can be pulled out and replaced with a balloon-shaped expanding stripper or a blade-type stripper. In general, the peeling effect can be achieved by replacing an extended or blade-type stripper having a higher peeling strength. However, the replacement of the dissector greatly increases the operation time, and the incision is expanded, which is not favorable for the smooth operation and the recovery of the patient.

Disclosure of Invention

The invention aims to provide a push-pull type composite breast tissue stripper, which can select an optimal stripping mode according to the bonding strength between skin and subcutaneous tissues, shorten the stripping operation time and reduce the pain of a patient.

In order to solve the technical problems, the invention adopts the technical scheme that: a push-pull type composite breast tissue stripper comprises a wedge-shaped stripping head, wherein the front end of the stripping head is a stripping part, and the rear end of the stripping head is fixedly provided with an operating handle;

the peeling head is of a hollow structure and is provided with two wing parts with openable front ends, and the front ends of the two wing parts are closed under a normal state so as to carry out blunt peeling operation through the closed front ends of the two wing parts;

the peeling head is provided with an expansion control mechanism, and the front ends of the two wing parts can be controlled to be opened and closed in a reciprocating manner through the expansion control mechanism so as to carry out expansion type peeling operation;

the inner cavity of the stripping head is also provided with a cutting knife, the operating handle is provided with a cutting control mechanism for controlling the cutting knife to extend out from the opened wing part, and the cutting type stripping operation can be carried out through the cutting knife extending out from the wing part.

As a further optimization scheme of the invention: the rear ends of the two wing parts in the stripping head are fixed on a spring steel sheet which can maintain the front ends of the two wing parts to be closed, and the operating handle is fixedly connected with the spring steel sheet.

As a further optimization scheme of the invention: the cutting control mechanism is connected to the expansion control mechanism through the clutch connecting piece, so that the expansion control mechanism synchronously controls the expansion of the front ends of the two wing parts and the extension of the cutting knife from the front ends of the wing parts in the joint state of the clutch connecting piece.

As a further optimization scheme of the invention: the expansion control mechanism comprises two crowbars which are respectively arranged corresponding to the two wing parts, the front ends of the crowbars are connected with the wing parts, and the rear ends of the crowbars extend towards the rear end direction of the operating handle across the spring steel sheet;

the operating handle is internally provided with a first axial hole communicated with the inner cavity of the stripping head, the cutting control mechanism comprises a first push rod which is slidably arranged in the first axial hole, one end of the first push rod is distributed in the inner cavity of the stripping head and is connected with the cutting knife, and the other end of the first push rod is connected with the crow bar through the clutch connecting piece;

the clutch connecting piece comprises a connecting rod hinged to the rear end of the crowbar and a column core rotatably arranged at the rear end of the first push rod, a profiled groove is formed in the periphery of the column core, a first strip-shaped hole is formed in the wall of the operating handle in a penetrating mode and is used for enabling one end, opposite to the crowbar, of the connecting rod to penetrate through the profiled groove and to be in sliding fit with the profiled groove, the first strip-shaped hole is distributed along the axial direction of the operating handle, the profiled groove comprises a circumferential section and an axial section, the circumferential section and the axial section are distributed along the circumferential direction of the column core in an L shape, the end, opposite to the crowbar, of the connecting rod is inserted into the circumferential section or in sliding fit with the axial section by rotating the column core, and therefore the connection or the connection of the torque transmission, which causes the first push rod to slide forwards, generated by pressing the rear end of the crowbar downwards is achieved;

the cross-section of first push rod is non-circular, and first axial hole has supplies first push rod sliding fit and avoids first push rod pivoted dysmorphism hole and supplies post core rotation and sliding fit's round hole, and the cross-section of first push rod is less than the post core cross-section so that the rear end of first push rod can slide in the round hole.

As a further optimization scheme of the invention: a first spring is sleeved between the cutting knife and the front end of the operating handle on the first push rod, a first torsion spring is arranged between the crow bar and the connecting rod, and a second torsion spring is arranged between the column core and the operating handle.

As a further optimization scheme of the invention: the rear end of the column core extends to the outside of the rear end of the operating handle and is fixedly provided with a hand wheel used for rotating the column core, or a deflector rod is vertically arranged on the circumferential surface of the column core and positioned at the position of the column core corresponding to the tail section of the crow bar, a second strip-shaped hole for the deflector rod to extend out is arranged on the wall of the operating handle, and the second strip-shaped hole is distributed along the circumferential direction of the operating handle.

As a further optimization scheme of the invention: the operating handle is internally provided with a second axial hole communicated with the inner cavity of the stripping head, the expanding mechanism comprises a second push rod which is arranged in the second axial hole in a sliding and penetrating way, and the front end of the second push rod is distributed in the inner cavity of the stripping head and is provided with a supporting block for supporting the two wing parts; the second push rod is provided with a third axial hole which is the same as the inner cavity of the stripping head, the cutting control mechanism comprises a third push rod which is slidably arranged in the third axial hole in a penetrating way, the front end of the third push rod is distributed in the inner cavity of the stripping head and is connected with the cutting knife, a plurality of friction rubber strips which are distributed along the self axial direction are arranged on the periphery of the third push rod, and the friction rubber strips penetrate through a third strip-shaped hole formed in the wall of the second push rod to be in friction fit with the inner wall of the operating handle; the clutch connecting piece is a pin shaft, and pin holes which are matched with the pin shaft to integrally pin the second push rod and the third push rod are correspondingly arranged on the second push rod and the third push rod respectively.

As a further optimization scheme of the invention: the rear ends of the second push rod and the third push rod are uniformly distributed outside the rear end of the operating handle, a first push handle is fixedly arranged at the rear end of the second push rod, a spring cavity communicated with a pin hole in the second push rod is radially arranged on the first push handle, a pin shaft is inserted into the spring cavity, the pin shaft can sequentially penetrate through the pin holes in the second push rod and the third push rod through external pressure so as to enable the second push rod and the third push rod to be connected into a whole through a pin, and a third spring used for pulling the pin shaft out of the pin hole in the third push rod is further sleeved on the part, located in the spring cavity, of the pin shaft.

As a further optimization scheme of the invention: the operating handle is internally provided with a fourth axial hole communicated with the inner cavity of the stripping head, the expansion control mechanism comprises a rotating rod which is rotatably arranged in the fourth axial hole, and the front end of the rotating rod is distributed in the inner cavity of the stripping head and is fixedly provided with a cam; the dwang has and peels off the fifth axial hole of first inner chamber intercommunication, cuts off control mechanism and wears to locate the fourth push rod in the fifth axial hole for sliding, the front end of fourth push rod with cutting knife fixed connection is equipped with the feather key in the periphery of fourth push rod along the axial, the feather key pass set up in the fourth hole on the dwang wall and with set up the keyway sliding fit on the handle inner wall.

As a further optimization scheme of the invention: the rear end of dwang distributes in the outside of operating handle rear end, and the rear end at the dwang is fixed to be equipped with the rotation handle, and the rear end of fourth push rod distributes in the outside of dwang rear end, and the rear end at the fourth push rod is fixed to be equipped with the second and pushes away the handle.

The peeling head of the present invention has two openable wing portions, and further has a cutting knife, an expansion control mechanism, and a cutting control mechanism. The two wing parts extend into the space between the breast skin and the subcutaneous tissue under the closed state to carry out blunt dissection. The opening and closing cycles of the two wing parts which are carried out at intervals in a reciprocating way under the action of the expansion control mechanism can achieve the effect of expanding and stripping. The cutter is hidden in the inner cavity of the stripping head in the operations of blunt stripping and expanding stripping and is not contacted with skin or muscle tissues, so that unnecessary wound incision is avoided. When the adhesive connection force is large, which cannot be performed by both the blunt type and the expanding type, the cutter can be extended out under the action of the cutting control mechanism, and the cutting operation processing is performed on the tightly combined part. Through the combination of the three stripping forms, an operator can select an optimal stripping mode constantly according to the stripping difficulty, so that the stripping operation time is shortened, bleeding is reduced, labor consumption is reduced, the operation quality is improved, the pain of a patient is relieved, and postoperative recovery is facilitated.

In a preferred embodiment of the present invention, the cutting control mechanism is connected to the expansion control mechanism via a clutch link, so that the expansion control mechanism synchronously controls the expansion of the two wing portions and the extension of the cutting blade from the wing portions in the engaged state of the clutch link. On one hand, the extending position of the cutter is just positioned in the gap between the skin and the subcutaneous tissue which are spread by the two wing parts and have high bonding adhesion strength, so that the cutter outlet position is accurate, and the accidental injury to the skin or the subcutaneous tissue is avoided; on the other hand, the separation and reunion connecting piece ensures that the cutting knife stretches out after the wing part is opened, the operation process is simple and convenient, the operation pressure of medical personnel is reduced, and the concentration degree under the operation state is favorably kept.

In a more preferable embodiment, the clutch connecting piece is started in a way that the clutch connecting piece and the expansion control mechanism can be operated by the same hand, so that the condition that the medical staff needs to hold the stripper by two hands simultaneously to perform stripping operation in the prior art is greatly improved, the medical staff can operate the stripper by one hand and hold and sense the condition of the breast at the corresponding position by the other hand so as to adjust the stripping posture or stripping mode at any time, and the quality and efficiency of the breast stripping are further improved.

Drawings

FIG. 1 is a schematic cross-sectional view of a first embodiment of the present invention in an initial state;

FIG. 2 is a schematic view of the clutched coupling of FIG. 1 without the expansion control mechanism and the severance control mechanism engaged and with only the expansion control mechanism activated;

FIG. 3 is a schematic illustration of the clutched coupling of FIG. 1 with the expansion control mechanism and the severance control mechanism engaged;

FIG. 4 is a schematic view of the post-FIG. 3 synchronous actuation of the dilation control mechanism and the severance control mechanism;

FIG. 5 is a schematic structural view of a column core portion of FIG. 1;

FIG. 6 is a schematic view of the engagement of the connecting rod with the profiled groove on the core;

FIG. 7 is a schematic perspective view of a second embodiment of the present invention in an initial state;

FIG. 8 is a schematic structural view of the stem portion of FIG. 7;

FIG. 9 is a schematic cross-sectional view illustrating an initial state of a third embodiment of the present invention;

FIG. 10 is a schematic illustration of FIG. 9 with only the expansion control mechanism activated;

FIG. 11 is a schematic illustration of the simultaneous activation of the dilation control mechanism and the severance control mechanism of FIG. 9;

FIG. 12 is a cross-sectional view of the fourth embodiment of the present invention in an initial state;

FIG. 13 is a cross-sectional view taken along line C-C of FIG. 12;

the labels in the figure are: 1. the device comprises a stripping head, 101, a wing part, 102, a spring steel sheet, 2, an operating handle, 3, a crow bar, 4, an axial section, 5, a first strip-shaped hole, 6, a second torsion spring, 7, a positioning mark point, 8, a hand wheel, 9, a first torsion spring, 10, a connecting rod, 11, a column core, 12, a first push rod, 13, a first spring, 14, a cutter, 15, a circumferential section, 16, a ball head, 17, a deflector rod, 18, a second strip-shaped hole, 19, a third push rod, 20, a second push rod, 21, a first push handle, 22, a third spring, 23, a pin shaft, 24, a third strip-shaped hole, 25, a friction rubber strip, 26, a support block, 27, a cam, 28, a fourth push rod, 29, a rotating rod, 30, a fourth strip-shaped hole, 31, a sliding key, 32, a key groove, 33, a second push handle, 34, a rotating handle, 35 and a limiting ring.

Detailed Description

A push-pull type composite breast tissue stripper comprises a wedge-shaped stripping head 1 and an operating handle 2 fixed at the rear end of the stripping head 1. The wedge point of the stripping head 1 forms a stripping part, after the stripping head 1 is inserted from an incision through the operating handle 2, the front end of the stripping head 1 is inserted into a gap between skin and subcutaneous tissue or muscle, and stripping is carried out in three different forms through the stripping head 1 and a related mechanism arranged in the stripping head 1, so that medical personnel can flexibly select according to actual conditions.

As shown in FIG. 7, FIG. 7 shows a structural form of the peeling head 1 of the present invention, which comprises a spring steel plate 102 and two wing portions 101 symmetrically distributed at the upper and lower ends of the spring steel plate 102. The two wings 101 are integrally formed with the peeling head 1, and the spring steel plate 102 is bent and accumulates elastic potential energy so that the front ends of the two wings 101 are closed in a normal state. At this point, blunt dissection may be performed through the closed front ends of the two wings 101.

According to the invention, the peeling head 1 is provided with an expansion control mechanism, and the front ends of two wing parts 101 can be controlled to be opened and closed in a reciprocating manner through the expansion control mechanism so as to carry out expansion type peeling operation; a cutter 14 is further provided in the inner cavity of the peeling head 1, and a cutting control mechanism for controlling the cutter 14 to be extended from the opened wing part 101 is provided in the operation handle 2, so that a cutting-type peeling operation can be performed by the cutter 14 extended from the wing part 101. The expansion control mechanism and the cleaving control mechanism in the present application will be described in detail below with reference to four embodiments. The cutting control mechanism in the first to third embodiments is connected to the expansion control mechanism through the clutch connection member, so that the expansion control mechanism synchronously controls the expansion of the front ends of the two wing portions 101 and the extension of the cutting blade 14 from the front ends of the wing portions 101 in the engaged state of the clutch connection member. Thereby but the accurate control goes out the sword position, avoids the accidental injury to skin or subcutaneous tissue to the operation process that makes cutting knife 14 stretch out is simple and convenient, has alleviateed medical personnel's operating pressure, and is specific:

one embodiment is shown in fig. 1-6. The expansion control mechanism in this embodiment is two crowbars 3 provided corresponding to the two wing portions 101, respectively. The front end of the crow bar 3 is welded and fixed at the middle-front position outside the wing part 101, and the rear end extends toward the rear end of the operation handle 2 and overlaps with the operation handle 2. The rear ends of the two crow bars 3 can be held by one hand and pressed, so that the front ends of the two wing parts 101 can be opened against the elastic force of the spring steel sheet 102. And then the front ends of the two wing parts 101 are alternately opened and closed in a reciprocating mode through the matching action of the back end operation of repeatedly pressing the two crowbars 3 and the elastic potential energy of the spring steel sheet 102, so that the expanding type stripping operation is realized. In order to prevent interference of the crowbar 3 due to protrusion during the peeling operation, a groove for receiving the crowbar 3 may be correspondingly provided outside the wing portion 101. As shown in fig. 7, two pry bars 3 may be fixed to the inner side of the wing portion 101, and holes through which the pry bars 3 extend may be provided in the spring steel plate 102 on the upper and lower sides of the operation handle 2.

The operating handle 2 is cylindrical and has a first axial hole communicating with the inner cavity of the stripping head 1. The cutting control mechanism comprises a first push rod 12 which can slide in a reciprocating mode along the axial direction of the first axial hole and cannot rotate. The front end of the first push rod 12 is distributed in the inner cavity of the stripping head 1 and is connected with the cutting knife 14, and the other end of the first push rod 12 is connected with the crow bar 3 through the clutch connecting piece. The cutting blade 14 is parallel to the opening position of the two wing parts 101, so that the cutting blade 14 is directly acted on the combination position of skin and subcutaneous tissue muscle after being extended, and sharp saw teeth can be arranged at the front end of the cutting blade 14, thereby being convenient for an operator to cut off the tissue or muscle which is difficult to be peeled off by swinging left and right. In order to prevent the first push rod 12 from rotating relative to the operation handle 2 and causing deviation of the angle of the cutting blade 14, the first push rod 12 has a non-circular cross section such as a triangle, a quadrangle or an ellipse. The front part of the first axial hole is in a shape corresponding to the section of the first push rod 12 so as to prevent the first push rod 12 and the cutting knife 14 thereon from rotating. Of course, the first push rod 12 can be prevented from rotating by a spline structure in the prior art. A baffle is arranged at the part of the first push rod 12 positioned in the stripping head 1, and a first spring 13 is sleeved at the position between the baffle and the front end of the operating handle 2 on the first push rod 12. The first spring 13 is used to pull the cutter blade 14, which has been extended by the external force, back into the peeling head 1, and maintains the state shown in fig. 1.

The clutch connecting piece in this embodiment includes a connecting rod 10 hinged to the rear end of the crow bar 3 and a column core 11 rotatably disposed at the rear end of a first push rod 12.

The included angle between the connecting rod 10 and the crow bars 3 is less than 90 degrees, preferably 45 degrees to 60 degrees, so that in the process of pressing the rear ends of the two crow bars 3, the inner end of the connecting rod 10 close to the operating handle 2 can move towards the front of the operating handle 2 instead of the rear of the operating handle 2, and further the first push rod 12 and the cutting knife 14 on the first push rod can extend out. The connecting rod 10 is hinged with the crowbar 3 through a pin rod, a first torsion spring 9 is sleeved on the pin rod, and two ends of the first torsion spring 9 are fixedly connected to the crowbar 3 and the connecting rod 10. The first torsion spring 9 maintains the link 10 in an initial state as shown in fig. 1 by its own elastic force in a normal state.

The column core 11 is cylindrical, the rear part of the first axial hole is circular for the column core 11 to rotate and move axially, and the cross-sectional shape of the first push rod 12 is smaller than that of the column core 11, so that the rear part of the first push rod 12 is inserted into the circular hole. The front end of the column core 11 is rotatably connected with the rear end of the first push rod 12 by adopting a miniature bearing or a ball groove structure, the rear end penetrates through the rear end of the operating handle 2 and is fixedly provided with a hand wheel 8, and the column core 11 can be driven to synchronously rotate by rotating the hand wheel 8. In the rotation process of the column core 11, due to the rotational connection between the column core 11 and the first push rod 12 and the matching effect of the shape of the first push rod 12 and the front part of the first axial hole, the friction force between the first push rod 12 and the column core 11 is not enough to make the first push rod 12 rotate synchronously.

As shown in fig. 5, the outer periphery of the column core 11 is provided with grooves corresponding to the positions of the two connecting rods 10. The type groove includes along the circumference section 15 of post core 11 circumference distribution and along the axial section 4 of post core 11 axial distribution, and circumference section 15 and axial section 4 communicate each other and are L shape. The two connecting rods 10 respectively penetrate through the first strip-shaped holes 5 formed in the wall of the operating handle 2 and then are distributed in the type groove in a sliding mode. When the inner ends of the two connecting rods 10 are positioned in the axial section 4, after the force pressing the tail ends of the two crowbars 3 is transmitted to the inner ends of the connecting rods 10, the inner ends of the connecting rods 10 can slide forwards along the axial section 4, and the connecting rods 10 are not engaged with the column core 11 and can not push the column core 11 to move forwards. When the inner end of the connecting rod 10 is located behind the circumferential section 15, the connecting rod 10 is engaged with the column core 11, and the column core 11, the first push rod 12 and the cutting knife 14 are synchronously pushed forwards by the abutting action of the circumferential section 15 in the process of advancing the inner end of the connecting rod 10, so that the effect that the cutting knife 14 extends out of the front end of the opened wing part 101 is realized.

The connection or separation state of the connecting rod 10 and the column core 11 is controlled by a hand wheel 8, and the groove on the column core 11 are rotated by rotating the hand wheel 8, so that the circumferential section 15 or the axial section 4 is respectively matched with the inner end of the connecting rod 10. In order to further increase the degree of automation of the present embodiment, a second torsion spring 6 is sleeved on the rear portion of the column core 11. One end of the second torsion spring 6 is fixed with the hand wheel 8 or the column core 11, and the other end is fixed with the rear end of the operating handle 2. The column core 11 is maintained in the initial state as shown in fig. 1 through the second torsion spring 6, the inner end of the connecting rod 10 is inserted into the axial section 4 at this time, and under the cooperation of the first torsion spring 9, the inner end of the connecting rod 10 is just positioned at the L-shaped inflection point of the profiled groove, so that the crow bar 3 is pressed downwards, and the inner end of the connecting rod 10 is matched with the axial section 4 to slide; the inner end of the connecting rod 10 slides into the circumferential section 15 by turning the hand wheel 8. The wires of the second torsion spring 6 have a certain clearance therebetween to accommodate relative displacement between the cylindrical core 11 and the lever 2.

In order to prevent the inner end of the connecting rod 10 from slipping from the groove, the clutch connection function is not realized. In this embodiment, as shown in fig. 6, a ball 16 is disposed at an inner end of the connecting rod 10, the axial section 4 and the circumferential section 15 in the groove are both in a shape of being narrow at the outside and wide at the inside, and the ball 16 is slidably distributed in a semi-closed cavity of the groove. The contact positions of the ball head 16 and the groove are smooth friction, so that the ball head 16 is prevented from sliding to generate large friction force when being positioned in the axial section 4.

The present embodiment will be further explained in the peeling operation with reference to fig. 1 to 4, in which fig. 1 is an initial state of the present embodiment. The positioning mark point 7 in fig. 1 is an artifact aid in the operation of the present embodiment, and is not actually present in the present embodiment. The operator, who has extended this embodiment into the breast with the incision in the state of fig. 1, inserts the front ends of the two wings 101 between the skin and the subcutaneous tissue, and performs blunt dissection by continuing to push inward and shaking moderately. In the peeling process, the front ends of the wing parts 101 are spread by holding the two crowbars 3, and the skin and the subcutaneous tissue are expanded to assist blunt peeling. If the connection between the tissue or muscle and the skin is tight and the resistance is large, so that the peeling head 1 is difficult to continue to advance, the hand wheel 8 can be rotated by a certain angle (schematically shown by the rotation of the positioning mark point 7) as shown in fig. 3, the inner end of the connecting rod 10 slides into the circumferential section 15 of the profiled groove under the action of the second torsion spring 6 and the first torsion spring 9, at the moment, the two crow bars 3 are gripped again, and the cutting knife 14 can extend out after the wing part 101 is opened, so that the cutting operation of the tight joint position is realized. After the cutting process is completed, the two crow bars 3 are loosened, the first push rod 12 retracts into the peeling head 1 under the action of the first spring 13, the connecting rod 10 and the column core 11 rebound under the action of the first torsion spring 9 and the second torsion spring 6, so that the embodiment enters the initial state shown in fig. 1 again, and the inner end of the connecting rod 10 is located at the starting point of the axial section 4 of the profiled groove.

Both blunt and expanding peels in this embodiment can be operated with one hand. The hand wheel 8 needs to be operated by the other hand before the cut-off operation, and the hand can be operated by a single hand in the actual cut-off operation process, so that the hands of the medical workers are liberated to a certain extent, the medical workers can basically operate by the single hand, the breasts can be gripped by the other hand, and the peeling process is sensed to be adjusted at any time.

The second embodiment is shown in fig. 7 and 8. The present embodiment is different from the first embodiment in effect in that it can be operated with a single hand completely, freeing the other hand of the medical care worker completely. Structurally, the difference from the first embodiment is that the manner for triggering the rotation of the column core 11 is different, except for the arrangement of the crow bar 3 described above. In this embodiment, the hand wheel 8 is not arranged outside the column core 11, but a shift lever 17 is fixedly arranged on the outer periphery of the column core 11 as shown in fig. 8, and the column core 11 is shifted to rotate by the shift lever 17. As shown in fig. 7, a second bar hole 18 through which the shift lever 17 extends is provided in the operation handle 2. The second strip-shaped holes 18 are circumferentially distributed along the operating handle 2, so that an operator can toggle the shift lever 17 to drive the column core 11 to rotate, the relative positions of the inner end of the connecting rod 10 and the axial section 4 and the circumferential section 15 in the groove are adjusted, and the connection or the separation of the expansion control mechanism and the cutting control mechanism is further completed. And the second elongated hole 18 has a width in the axial direction of the operation handle 2 to avoid interference between the shift lever 17 and the operation handle 2 in the forward movement state of the stem 11.

The peeling operation performed by this embodiment is substantially the same as that performed by the first embodiment, but only the engagement of the clutch connection member for extending the cutting knife 14 is achieved by toggling the shift lever 17 instead of rotating the handwheel 8 of the first embodiment, and therefore, the description thereof is omitted.

Example three is shown in fig. 9-11. In this embodiment, the handle 2 has a second axial hole therein which communicates with the interior of the stripping head 1. The expanding mechanism is a second push rod 20 which is slidably arranged in the second axial hole in a penetrating way, the front end of the second push rod 20 is distributed in the inner cavity of the stripping head 1 and is provided with a supporting block 26 for supporting the two wing parts 101. The working end of the clamp part of the supporting block 26 is wedge-shaped, and after the supporting block 26 is continuously pushed forwards by the second push rod 20, the front ends of the two wing parts 101 are spread by the supporting block 26, so that the expanding and stripping effect is achieved.

The second push rod 20 has a third axial hole identical to the inner cavity of the stripping head 1. The cutting control mechanism comprises a third push rod 19 which is arranged in a third axial hole in a sliding penetrating mode, and the front end of the third push rod 19 is distributed in the inner cavity of the stripping head 1 and connected with the cutting knife 14. The cutting blade 14 is pushed out by the third push rod 19, and then the cutting and peeling operation is performed. In order to avoid the situation that the cutting knife 14 extends out to cause accidental injury, the forward second push rod 20 drives the third push rod 19 to move forward synchronously through friction force during expanding and stripping. In this embodiment, an elastic member is provided, by which the third push rod 19 is integrated with the operation handle 2 and fixes the relative position of the two in the disengaged state of the clutch connection member. Specifically, a through hole is radially formed in the third push rod 19, a rubber or silica gel plate is arranged in the through hole, two sides of the silica gel plate respectively extend out of two sides of the through hole and then tightly contact the inner wall of the operation handle 2, and the friction force between the friction rubber strip 25 formed on two sides of the rubber or silica gel plate and the operation handle 2 overcomes the friction force between the third push rod 19 and the second push rod 20. The rubber or silicone plate is fixed with the third push rod 19 by a pin to ensure strength. A third strip-shaped hole 24 for the friction rubber strip 25 to penetrate out to be matched with the inner wall of the operating handle 2 is formed in the second push rod 20. The third strip-shaped hole 24 has a certain length to avoid interference between the friction rubber strip 25 and the second push rod 20 during the relative movement of the second push rod 20 and the third push rod 19.

The clutch connecting piece in this embodiment is a pin 23, and pin holes which are matched with the pin 23 to pin-connect the second push rod 20 and the third push rod 19 into a whole are correspondingly arranged on the second push rod 20 and the third push rod 19 respectively. The pin 23 is inserted into the pin holes of the second push rod 20 and the third push rod 19 simultaneously, so that the connection is realized, and the separation is generated after only a single pin hole is inserted. Specifically, the method comprises the following steps:

the rear ends of the second push rod 20 and the third push rod 19 are both distributed outside the rear end of the operation handle 2. A first push handle 21 is fixedly arranged at the rear end of the second push rod 20, and a spring cavity communicated with the pin hole on the second push rod 20 is arranged on the first push handle 21 along the radial direction. The pin 23 is inserted into the spring cavity, the upper end of the pin 23 protrudes from the periphery of the first push handle 21 and is distributed, the lower end is located in the pin hole only located on the second push rod 20, and the part of the pin 23 located in the spring cavity is further sleeved with a third spring 22 for maintaining the state. After the pin shaft 23 is pressed down under the action of external force, the lower end of the pin shaft 23 can be inserted into the pin hole on the third push rod 19, so that the second push rod 20 is jointed with the third push rod 19, and further the expansion control mechanism is jointed with the cutting control mechanism, and the cutting knife 14 is extended out of the stripping head 1 while the two wing parts 101 are opened by the force of pushing the first push handle 21 forwards.

The procedure of this example in carrying out the peeling operation is as follows: fig. 9 shows an initial state of the present embodiment, in which the operation handle 2 can be directly held for blunt peeling. As shown in FIG. 10, the expanding type peeling auxiliary operation is performed by pushing the first push handle 21 forward in the blunt type peeling process. In order to prevent the cutter 14 from being protruded due to the mis-collision of the end of the third push rod 19 in the expanding peeling, the axial length of the first push handle 21 may be extended appropriately so that the rear end of the third push rod 19 is not exposed during the pushing of the second push rod 20, and the operation of the medical staff may be further facilitated by extending the length thereof. As shown in fig. 11, the cutting blade 14 is extended from the peeling head 1 by pushing the first push handle 21 forward again after the pin 23 is pushed down, and the cutting-off peeling operation is performed. After the first push handle 21 is pulled back, the upper end of the pin 23 is released, and the pin 23 rebounds under the action of the third spring 22 to enter the initial state again.

It should be noted that, the third strip-shaped hole 24 in this embodiment not only has an abdicating function for the friction rubber strip 25, but also has an auxiliary butt-joint function for the two pin holes in the moving process of the second push rod 20 and the third push rod 19: in the expanding type peeling operation shown in fig. 10, when two pin holes are needed to be overlapped and butted for cutting and peeling, because the positions of the two pin holes are hidden and invisible, the second push rod 20 is pulled backwards, the two pin holes are butted and overlapped after the front end of the third strip-shaped hole 24 is contacted with the front end of the friction rubber strip 25, and at this time, the pin shaft 23 is pressed downwards to realize the joint of the second push rod 20 and the third push rod 19. The diameter of the two pin holes, especially the pin hole on the third push rod 19, can be set to be 1.5-2 times of the diameter of the pin 23, which further facilitates the insertion of the pin 23.

Fourth embodiment as shown in fig. 12 and 13, the handle 2 of this embodiment has a fourth axial hole therein which communicates with the interior cavity of the stripping head 1. The expansion control mechanism comprises a rotating rod 29 rotatably arranged in the fourth axial hole, and the front end of the rotating rod 29 is distributed in the inner cavity of the stripping head 1 and fixedly provided with a cam 27. The rotation rod 29 is rotated to rotate the cam 27 synchronously, thereby opening and closing the wing part 101 in a reciprocating manner. The rotating rod 29 is provided with a fifth axial hole communicated with the inner cavity of the peeling head 1, the cutting control mechanism is a fourth push rod 28 which is arranged in the fifth axial hole in a sliding and penetrating mode, and the front end of the fourth push rod 28 is fixedly connected with the cutting knife 14. By pushing the fourth push rod 28 forward, the cutter 14 is caused to protrude from the peeling head 1, and the cutting operation is performed.

The rotating lever 29 in this embodiment can only rotate and cannot move axially. The fourth push rod 28 is only axially movable and cannot be rotated. In order to achieve the above purpose, a raised limiting ring 35 is arranged on the outer portion of the rotating rod 29 along the circumferential direction, an annular limiting groove is correspondingly arranged on the inner wall of the operating handle 2, and the limiting ring 35 is in sliding fit with the limiting groove and avoids generating axial relative displacement. The periphery of the fourth push rod 28 is provided with a sliding key 31 along the axial direction, and the sliding key 31 passes through a fourth hole 30 arranged on the wall of the rotating rod 29 and is in sliding fit with a key groove 32 arranged on the inner wall of the operating handle 2, so that the fourth push rod 28 is prevented from rotating. The fourth hole 30 has a length for relative sliding movement in the axial direction between the fourth push rod 28 and the rotating rod 29. While the fourth hole 30 has a certain width for relative rotation between the rotating rod 29 and the fourth push rod 28.

The rear end of the rotating rod 29 is distributed outside the rear end of the operating handle 2, the rotating handle 34 is fixedly arranged at the rear end of the rotating rod 29, the rear end of the fourth push rod 28 is distributed outside the rear end of the rotating rod 29, and the second push handle 33 is fixedly arranged at the rear end of the fourth push rod 28. In the specific peeling operation of the present embodiment, the passive peeling is performed in the initial state shown in fig. 12. The expanding exfoliation is performed by reciprocating rotation of the rotating handle 34. The second push handle 33 is pushed forward to extend the cutter 14, thereby performing the separation-type peeling.

The expansion control mechanism and the cutting control mechanism in the embodiment are mutually separated, no clutch connecting piece is additionally arranged, and medical personnel can flexibly select different stripping modes according to actual conditions. Compared with the prior art, the method is not complicated in the stripping operation process, and the operation difficulty is not increased. And the structure of the expansion control mechanism and the cutting control mechanism is simpler than that of the first three embodiments, which is beneficial to production and prolongs the service life.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Without contradiction, a person skilled in the art may combine and combine features of different embodiments described in this specification to further improve their applicability.

Claims (2)

1. The utility model provides a compound breast tissue stripper of plug-type, includes wedge-shaped peeling head (1), and the front end of peeling head (1) is for peeling off the portion, and the rear end is fixed and is equipped with handle (2), its characterized in that:

the peeling head (1) is of a hollow structure and is provided with two wings (101) with openable front ends, and the front ends of the two wings (101) are closed in a normal state so as to carry out blunt peeling operation through the closed front ends of the two wings (101); the peeling head (1) is provided with an expansion control mechanism, and the front ends of the two wing parts (101) can be controlled to be opened and closed in a reciprocating manner through the expansion control mechanism so as to carry out expansion type peeling operation;

a cutting knife (14) is arranged in the inner cavity of the stripping head (1), a cutting control mechanism for controlling the cutting knife (14) to extend out of the opened wing part (101) is arranged on the operating handle (2), and the cutting type stripping operation can be carried out through the cutting knife (14) extending out of the wing part (101);

the rear ends of two wing parts (101) in the stripping head (1) are fixed on a spring steel sheet (102) which can maintain the front ends of the two wing parts (101) to be closed, and the operating handle (2) is fixedly connected with the spring steel sheet (102); the cutting control mechanism is connected to the expansion control mechanism through a clutch connecting piece so as to synchronously control the expansion of the front ends of the two wing parts (101) and the extension of the cutting knife (14) from the front ends of the wing parts (101) by the expansion control mechanism under the joint state of the clutch connecting piece;

a second axial hole communicated with the inner cavity of the stripping head (1) is formed in the operating handle (2), the expanding mechanism comprises a second push rod (20) which is arranged in the second axial hole in a sliding and penetrating mode, the front end of the second push rod (20) is distributed in the inner cavity of the stripping head (1) and is provided with a supporting block (26) used for supporting the two wing parts (101); the second push rod (20) is provided with a third axial hole which is the same as the inner cavity of the stripping head (1), the cutting control mechanism comprises a third push rod (19) which is arranged in the third axial hole in a sliding and penetrating mode, the front end of the third push rod (19) is distributed in the inner cavity of the stripping head (1) and is connected with the cutting knife (14), a plurality of friction rubber strips (25) which are distributed along the self axial direction are arranged on the periphery of the third push rod (19), and the friction rubber strips (25) penetrate through a third strip-shaped hole (24) formed in the wall of the second push rod (20) to be in friction fit with the inner wall of the operating handle (2); the clutch connecting piece is a pin shaft (23), and pin holes which are matched with the pin shaft (23) to integrally pin the second push rod (20) and the third push rod (19) are correspondingly arranged on the second push rod (20) and the third push rod (19) respectively.

2. A push-pull composite breast tissue dissector according to claim 1 wherein: the rear ends of the second push rod (20) and the third push rod (19) are uniformly distributed outside the rear end of the operating handle (2), a first push handle (21) is fixedly arranged at the rear end of the second push rod (20), a spring cavity communicated with a pin hole in the second push rod (20) is radially arranged on the first push handle (21), a pin shaft (23) is inserted into the spring cavity, the pin shaft (23) can sequentially penetrate through the pin holes in the second push rod (20) and the third push rod (19) through external pressure so as to pin-connect the second push rod (20) and the third push rod (19) into a whole, and a third spring (22) used for pulling the pin shaft (23) out of the pin hole in the third push rod (19) is further sleeved on the part, positioned in the spring cavity, of the pin shaft (23).

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