CN215384560U - Detachable surgical operation instrument - Google Patents

Abstract

The utility model discloses a detachable surgical instrument, comprising: the handle part comprises a shell and a handle sleeve formed by extending the far end part of the shell, and a first electric butt joint mechanism and a first mechanical butt joint mechanism are arranged on the handle sleeve; the executing mechanism comprises an executing sleeve, a second electric butt joint mechanism and a second mechanical butt joint mechanism are correspondingly arranged at the near end of the executing sleeve, and the handle part is electrically connected with the executing mechanism and can be detachably and mechanically connected through the matching of the first electric butt joint mechanism and the second electric butt joint mechanism and the matching of the first mechanical butt joint mechanism and the second mechanical butt joint mechanism; when the handle part is connected with the actuating mechanism, the handle part controls the actuating mechanism to operate. When the actuating mechanism and the handle part are detachably connected, the operation of the actuating mechanism is controlled by the handle part, so that the problem that the gap between the outer sleeve and the inner sleeve of the existing surgical operation instrument is difficult to clean is solved.

Description

Detachable surgical operation instrument

Technical Field

The utility model relates to the field of electrosurgical instruments, is applied to electrocoagulation hemostasis and/or tissue cutting in a surgical operation process, and particularly relates to a detachable surgical instrument.

Background

High frequency electrosurgical instruments are surgical instruments used for electrocoagulation hemostasis and/or cutting tissue during surgery, and generally include a gun-type structure and a forceps-type structure. The high-frequency electrosurgical instrument with the clamp-type structure is mainly characterized in that a blood vessel is clamped and physically pressurized through two clamps at the front end, and simultaneously, high-frequency electric energy is provided by a high-frequency energy generator and transmitted to a metal clamp at the front end of the instrument, so that collagen and fibrin in the blood vessel are dissolved, denatured and fused together, and the blood vessel is closed; the closing tape is cut off by directly cutting after the blood vessel is closed. Thus, the operation time is greatly shortened, bleeding is reduced, and the operation risk is minimized, which is widely used in surgical operations due to its high efficiency and reliability compared to conventional suture ligation.

A high-frequency electrosurgical instrument of a forceps-type structure generally comprises a forceps, a cutting knife, a knife bar, an inner sleeve and an outer sleeve which surround the knife bar, an energizing cable and a holding mechanism. The electrified cable transmits high-frequency electric energy to the clamp, and the clamp and the cutting knife are combined to realize the functions of clamping tissues and closing blood vessels and a cutting function. The inner sleeve plays a role in protecting and supporting the cutter bar on one hand, and on the other hand, the inner sleeve and the clamp form a connecting rod mechanism which can drive the clamp to close and open. The outer sleeve on one hand isolates the inner sleeve and the electrified cable from the outside to play a role in protection, on the other hand is fixed with the clamp to form a supporting end of the connecting rod mechanism, the holding mechanism is used for being held by the hands of a doctor and operating the clamp to open and close, and a switch is generally arranged on the holding mechanism and used for controlling an oscillating electric signal output by the high-frequency energy generator to be transmitted to the clamp.

The sleeves of surgical instruments currently on the market comprise an outer sleeve and an inner sleeve, and the knife bar is positioned in the inner sleeve. The gaps between the inner sleeve and the outer sleeve and between the inner sleeve and the cutter bar are smaller, and after one operation is finished, blood or tissue fluid enters the gaps between the inner sleeve and the outer sleeve or the gaps between the inner sleeve and the cutter bar are very small and narrow. Since blood or tissue fluid entering the gap is difficult to clean, even though the structure and performance of the surgical instrument are still good, the surgical instrument cannot be reused in a surgical operation, and can only be used as a disposable instrument, so that the use cost of the surgical instrument is very high.

Disclosure of Invention

The present invention provides a detachable surgical instrument, the surgical instrument comprising: an actuator and a handle portion. The actuators are used in surgical procedures in contact with biological tissue, often requiring replacement to ensure cleanliness; the handle part is not contacted with biological tissues and can be reused after sterilization so as to reduce the operation cost.

A detachable surgical instrument, comprising:

the electric butt joint device comprises a handle part and a handle, wherein the handle part comprises a shell and a handle sleeve formed by extending the far end part of the shell, and a first electric butt joint mechanism and a first mechanical butt joint mechanism are arranged on the handle sleeve;

the actuating mechanism comprises an actuating sleeve, a second electric butt joint mechanism and a second mechanical butt joint mechanism are correspondingly arranged at the near end of the actuating sleeve, the handle part is electrically connected with the actuating mechanism through the matching of the first electric butt joint mechanism and the second electric butt joint mechanism, and the handle part is detachably connected with the actuating mechanism through the matching of the first mechanical butt joint mechanism and the second mechanical butt joint mechanism;

when the handle part is connected with the actuating mechanism, the handle part controls the actuating mechanism to operate. In detail, the operation of the actuating mechanism not only has the purpose of blood vessel coagulation, but also can heat the tissue when the high-frequency high-voltage current generated by the tip of the effective electrode is contacted with the body, so as to realize the separation and coagulation of the body tissue, thereby achieving the purposes of cutting and hemostasis.

Further, the first electric docking mechanism comprises a channel a and a handle electrode, the second electric docking mechanism comprises a clamp electrode corresponding to the channel a and the handle electrode, the clamp electrode is inserted into the channel a, the clamp electrode is correspondingly matched with the handle electrode, and the handle part is electrically connected with the actuating mechanism.

Further, the handle electrode is arranged on the handle sleeve, the handle electrode is connected with the high-frequency energy generator, the clamp electrode is a pair of mutually insulated protruding electrodes arranged at the near end of the clamp sleeve, one electrode of the pair of protruding electrodes is electrically connected with one clamp, and the other electrode of the pair of protruding electrodes is electrically connected with the other clamp.

Further, first mechanical docking mechanism includes passageway b, second mechanical docking mechanism including correspond passageway b the boss and with boss complex recess, be equipped with the pull rod in the handle sleeve, the recess is located the distal end of pull rod will the boss inserts passageway b is to a certain position and rotation, the boss joint in the recess, handle portion with actuating mechanism mechanical connection.

Furthermore, the execution sleeve is further provided with a sliding block and a bulge connected with the sliding block, the bulge can axially move under the driving of the sliding block, when the boss is clamped in the groove, the sliding block is pushed towards the near end of the execution sleeve, the bulge is inserted into the channel b, and the handle part is circumferentially connected with the execution mechanism.

Further, a closing trigger is arranged on a shell of the handle part and controls the pull rod to axially move along the handle sleeve so as to control the opening and closing of the clamp on the actuating mechanism; the device is characterized in that a cutting knife is further arranged in the execution sleeve, a central rod which is axially arranged and connected with the cutting knife is further arranged in the handle sleeve, a push-type broach button is arranged on a shell of the handle part, the push-type broach button is mechanically connected with the central rod, and the push-type broach button controls the central rod to axially move to drive the cutting knife to axially move.

Furthermore, a reset mechanism is arranged in the execution sleeve, and the reset mechanism retracts the cutting knife which cuts off the tissues to the original position after the push knife button is loosened.

Further, the center rod may pull back the pushed-out cutting blade.

Further, the handle part is also provided with an electrifying button for controlling the high-frequency energy generator to transmit high-frequency energy to the handle electrode.

Further, the handle portion is reusable and the actuator is disposable.

The surgical instrument provided by the utility model is a detachable structure and comprises a disposable actuating mechanism and a reusable handle part, wherein the disposable clamping part is in contact with biological tissues, so that the disposable clamping mechanism is used in a disposable operation and protects the safety of a patient, and the reusable handle part is not in contact with the biological tissues, so that the reusable clamping mechanism can be reused after sterilization, and the operation cost is reduced.

Drawings

FIG. 1 is a schematic view of a surgical system of a detachable surgical instrument provided in accordance with the present invention;

FIG. 2 is a schematic diagram of a detachable surgical instrument according to the present invention;

FIG. 3 is a schematic view of an actuator in the detachable surgical instrument;

FIG. 4 is a schematic axial cross-sectional view of an actuator in the detachable surgical instrument;

FIG. 5 is a schematic view of a proximal end structure of an actuator of the detachable surgical instrument;

FIG. 6 is a schematic view of a distal end configuration of a handle sleeve of a detachable surgical instrument;

FIG. 7 is a schematic view of the attachment of an actuator and handle portion of the detachable surgical instrument;

FIG. 8 is a schematic view of the state of the coupling portion after the installation of the detachable surgical instrument is completed;

FIG. 9 is a schematic axial cross-sectional view of the attachment portion after installation of the detachable surgical instrument;

FIG. 10 is a transverse cross-sectional view of the attachment portion of the detachable surgical instrument after installation is complete.

Detailed Description

In order to make the technical problems, technical solutions and advantages solved by the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

The electrosurgical instrument system provided by the present invention, as shown in fig. 1, is mainly composed of a surgical instrument (electrosurgical instrument) a of a forceps-type structure and a high-frequency energy generator B. The high-frequency energy generator B is used for generating and transmitting high-frequency electric energy to the surgical instrument A and controlling the operation of the surgical instrument A; mainly, high frequency electrical energy is delivered to the metal clip at the front end of the surgical instrument a, closing the blood vessel.

The main structure of the surgical instrument a is shown in fig. 2, and comprises a disposable actuating mechanism 1 and a reusable handle part 2, wherein the actuating mechanism 1 is detachably connected with the handle part 2, the actuating mechanism 1 is mainly a clamp part which is in contact with biological tissues and is disposable, the clamp part is used in disposable operation to protect the safety of a patient, and the reusable handle part 2 is not in contact with the biological tissues and is reusable after sterilization, thereby reducing the operation cost.

The actuating mechanism 1 of the surgical instrument a comprises an actuating sleeve, wherein the actuating sleeve is an actuating circular tube 10 located at the proximal end of the actuating mechanism 1, the handle part 2 comprises a housing and a handle sleeve formed by extending the end part of the housing, specifically, the handle sleeve comprises an elongated handle circular tube 20 extending from the housing of the handle part 2 to the distal end along the axial direction, and the distal end of the handle circular tube 20 and the proximal end of the actuating circular tube 10 are detachably connected through an electrical docking mechanism and a mechanical docking mechanism respectively.

The handle round tube 20 is provided with a first electric butt joint mechanism and a first mechanical butt joint mechanism; a second electric butt joint mechanism and a second mechanical butt joint mechanism are correspondingly arranged at the near end of the execution circular tube 10, and the handle part 2 is electrically connected with the execution mechanism 1 through the matching of the first electric butt joint mechanism and the second electric butt joint mechanism to realize the transmission of current; meanwhile, the handle part 2 is detachably and mechanically connected with the actuating mechanism 1 through the matching of the first mechanical butt joint mechanism and the second mechanical butt joint mechanism. When the handle part 2 is connected with the actuating mechanism 1, the actuating mechanism 1 can be controlled by the handle part 2 to operate, the operation of the actuating mechanism 1 not only comprises blood vessel coagulation, but also can heat tissues when high-frequency high-voltage current generated by the tip of an effective electrode is contacted with the tissues, so that the separation and coagulation of the tissues of the body are realized, and the purposes of cutting and hemostasis are achieved.

As shown in fig. 3-5, the actuating cylinder 10 includes an outer cylinder 10a and an inner cylinder 10b, and the distal end of the actuating cylinder 10 has a pair of jaws 11, 12 for holding biological tissue, wherein at least one of the jaws 11 or 12 can be rotated about a rotation axis 13, 14 to effect closing and opening of the jaws 11, 12.

The proximal end of an execution circular tube 10 of the execution mechanism 1 is made of an insulating material, a pair of fixed and mutually insulated clamp electrodes 15 and 16 and a cutting knife 18 capable of moving along the axial direction and cutting the coagulated tissue are arranged on the execution circular tube 10, and the pair of clamp electrodes 15 and 16 are respectively connected with clamps 11 and 12 so as to electrify the clamps 11 and 12. Preferably, the clamp electrodes 15, 16 are a pair of bump electrodes, one of which is electrically connected to one of the clamps 11, 12 and the other of which is electrically connected to the other of the clamps 11, 12.

The proximal end of the execution circular tube 10 is further provided with at least one boss 17, the boss 17 is mechanically connected with the clamps 11 and 12, and the opening and closing of the clamps 11 and 12 are controlled by controlling the movement of the boss 17.

As shown in fig. 6, the handle portion 2 has a closure trigger 21 and a push button 22 provided on the housing thereof so as to be movable relative to each other. At least one pull rod 201 with a groove 201a and at least one center rod 202 arranged along the axial direction of the handle circular tube 20 are arranged in the handle circular tube 20, the pull rod 201 is mechanically connected with the closing trigger 21, and the closing trigger 21 controls the pull rod 201 to move along the axial direction of the handle circular tube 20, so as to drive the opening and closing of the clamps 11 and 12; the center rod 202 is mechanically connected to the push button 22, and the push button 22 controls the center rod 202 to move axially along the handle tube 20, so as to drive the cutting blade 18 to move axially.

The handle tube 20 comprises a pair of handle electrodes 203, 204 insulated from each other near the distal end, the handle portion 2 is further provided with a power switch (not shown), the handle electrodes 203, 204 are connected to a high-frequency energy generator, the high-frequency energy generator is used for transmitting high-frequency energy to the handle electrodes 203, 204, and the high-frequency energy generator is controlled to start or stop outputting an oscillating electric signal by the starting or the stopping of the power switch, so as to transmit high-frequency electric energy to the handle electrodes 203, 204 or stop transmitting high-frequency electric energy to the handle electrodes 203, 204.

The distal end of the handle barrel 20 is made of an insulating material, and the distal end of the handle barrel 20 is provided with a channel a for accommodating the clamp electrodes 15 and 16 and a channel b for accommodating the boss 17.

Namely, the first electric docking mechanism is a channel a arranged at the far end of the handle round tube 20 and handle electrodes 203 and 204 arranged on the wall part of the channel a, and the first mechanical docking mechanism is a channel b arranged at the far end of the handle round tube 20; correspondingly, the second electrical docking mechanism is the clamp electrodes 15 and 16 arranged at the near end of the execution circular tube 10, the second mechanical docking mechanism is the boss 17 arranged at the far end of the execution circular tube 10 and the groove 201a in motion fit with the boss 17, the groove 201a is arranged at the far end of at least one pull rod 201 in the handle circular tube 20, the clamp electrode 15 is inserted into the channel a, the boss 17 is inserted into the channel b to a certain position and rotates, the boss 17 is clamped in the groove 201a of the pull rod, the mechanical connection between the handle part 2 and the execution mechanism 1 is realized, the clamp electrodes 15 are in one-to-one corresponding fit with the handle electrodes 203 and 204, and the electrical connection between the handle part and the execution mechanism is further realized.

In the present invention, a reset mechanism is further disposed in the actuating sleeve (actuating cylinder 10), preferably, the reset mechanism is a reset spring, wherein the reset spring is compressed when the push button 22 pushes the cutting knife to move distally, and after the push button is released after the cutting is completed, the compressed spring returns to its original state to provide a restoring force for the cutting knife to move proximally, so as to return the cutting knife to its original position after the tissue is cut.

In some embodiments, the cutting blade pushed out distally may also be pulled back directly through the center rod.

The actuating cylinder 10 further comprises a push block 18a and a cutter spring 18b, the push block 18a is arranged near the proximal end of the actuating cylinder 10, and the cutter is pushed to move along the axial direction by the push block 18 a. The actuating sleeve (actuating cylinder 10) is further provided near the proximal end with a slider 19a and a protrusion 19b connected to the slider 19a, the protrusion 19b is circumferentially arranged at an angle α to the clamping electrodes 15, 16, and the slider 19a is elastically movable towards the proximal end or the distal end of the actuating cylinder 10 under the urging of an elastic member 18b (shown in fig. 9) arranged inside the actuating cylinder 10.

As shown in fig. 7-9, the process of mounting the actuator 1 and the handle portion 2 is as follows:

the clamp electrodes 15 and 16 at the near end of the execution circular tube 10 are aligned with the channel a at the far end of the handle circular tube 20 and then inserted into the channel a, meanwhile, the boss 17 is aligned with the channel b and correspondingly inserted into the channel b, the slider 19a abuts against the end surface of the handle circular tube 20 and moves towards the far end of the handle circular tube 20, the elastic component arranged inside the execution circular tube 10 is compressed, and when the boss 19b is aligned with the channel a of the handle circular tube 20, the boss 19b moves towards the near end of the execution circular tube 10 and is embedded into the channel a under the action of the compressed elastic component, so that the execution mechanism 1 and the handle part 2 are prevented from rotating along the circumferential direction.

Meanwhile, after the protrusion 19b is inserted into a certain position, the execution circular tube 10 is rotated by a certain angle, the angle is approximately equal to alpha, at the moment, the boss 17 is engaged with the groove 201 of the pull rod 201, and the closing trigger 21 controls the opening and closing of the clamps 11 and 12 by pulling the boss 17 through the pull rod 201; the push button 22 can control the axial movement of the center rod 202, and compress the cutting knife spring 18b while pushing the push block 18a, so as to push out the cutting knife 18 in the execution circular tube 10, and cut off the coagulated vascular tissue.

Upon release of the pusher button 22, the compressed cutting blade spring 18b retracts the cutting blade within the barrel 10 to the home position. In yet other embodiments, the center rod 201 may be configured to mechanically couple with the cutting burr 18 to directly pull back the pushed-out cutting burr 18 through the center rod 201. Meanwhile, the clamp electrodes 15, 16 and the handle electrodes 203, 204 of the actuator 1 are electrically connected to each other to be able to transmit high-frequency energy to the clamps 11, 12 further through the clamp electrodes 15, 16 and the handle electrodes 203, 204, thereby achieving the blood vessel closing operation. Preferably, the handle electrodes 203, 204 may be provided as an electrically conductive elastic member (e.g., a metal sheet) to ensure good contact between the clamp electrodes 15, 16 and the handle electrodes 203, 204.

Further, the handle portion may also include a power-on button (not shown) to enable selective release of high frequency energy; in another embodiment, the power-on button may also be provided on the high frequency generator.

When the actuating mechanism 1 and the handle part 2 are disassembled, the sliding block 19a is pushed to move for a certain stroke towards the far end of the circular tube 10 of the actuating mechanism, the elastic component arranged inside the circular tube 10 of the actuating mechanism is compressed, and the bulge 19b is disengaged from the channel a; the actuator 1 is rotated in the reverse direction by an angle approximately equal to α, and the removal of the actuator 1 (reverse operation of the mounting process) is completed.

The surgical operation instrument provided by the utility model fundamentally solves the problem that the gap between the outer sleeve and the inner sleeve of the existing surgical operation instrument is difficult to clean, and the cost of the surgical operation is greatly reduced; and the structure is simple, the assembly and disassembly are convenient, and the cleaning is easy.

Claims (10)

1. A detachable surgical instrument, the surgical instrument comprising:

the electric butt joint device comprises a handle part and a handle, wherein the handle part comprises a shell and a handle sleeve formed by extending the far end part of the shell, and a first electric butt joint mechanism and a first mechanical butt joint mechanism are arranged on the handle sleeve;

the actuating mechanism comprises an actuating sleeve, a second electric butt joint mechanism and a second mechanical butt joint mechanism are correspondingly arranged at the near end of the actuating sleeve, the handle part is electrically connected with the actuating mechanism through the matching of the first electric butt joint mechanism and the second electric butt joint mechanism, and the handle part is detachably connected with the actuating mechanism through the matching of the first mechanical butt joint mechanism and the second mechanical butt joint mechanism;

when the handle part is connected with the actuating mechanism, the handle part controls the actuating mechanism to operate.

2. The surgical instrument of claim 1, wherein the first electrical interface mechanism comprises a channel a and a handle electrode, and the second electrical interface mechanism comprises a clamp electrode corresponding to the channel a and the handle electrode; and inserting the clamp electrode into the channel a, wherein the clamp electrode is correspondingly matched with the handle electrode, and the handle part is electrically connected with the actuating mechanism.

3. The surgical instrument of claim 2, wherein the handle electrode is disposed on the handle cannula, the handle electrode being configured to be coupled to a high frequency energy generator; the distal end of the actuating sleeve has a pair of jaws for grasping biological tissue; the clamp electrodes are a pair of protruding electrodes which are arranged at the near end of the execution sleeve and are insulated from each other, one electrode of the pair of protruding electrodes is electrically connected with one clamp, and the other electrode of the pair of protruding electrodes is electrically connected with the other clamp.

4. The surgical instrument of claim 1, wherein the first mechanical docking mechanism comprises a channel b, the second mechanical docking mechanism comprises a boss corresponding to the channel b, and a groove movably engaged with the boss, a pull rod is disposed in the handle sleeve, the groove is disposed at a distal end of the pull rod, the boss is inserted into the channel b to a certain position and rotated, the boss is engaged with the groove, and the handle portion is mechanically connected with the actuator.

5. The surgical instrument of claim 4 wherein said actuating sleeve further comprises a slider and a projection coupled to said slider, said projection being axially movable by said slider, said slider being urged toward said actuating sleeve proximal end when said projection engages said recess, said projection being inserted into said channel b, said handle portion being circumferentially coupled to said actuator.

6. The surgical instrument of claim 4, wherein the housing of the handle portion is provided with a closure trigger that controls axial movement of the pull rod along the handle sleeve to control opening and closing of a pair of jaws at a distal end of the actuating sleeve for grasping biological tissue; the device is characterized in that a cutting knife is further arranged in the execution sleeve, a central rod which is axially arranged and connected with the cutting knife is further arranged in the handle sleeve, a push-type broach button is arranged on a shell of the handle part, the push-type broach button is mechanically connected with the central rod, and the push-type broach button controls the central rod to axially move to drive the cutting knife to axially move.

7. The surgical instrument of claim 6, wherein a return mechanism is further disposed within the actuation sleeve, the return mechanism returning the cutting burr to a home position upon release of the push button.

8. The surgical instrument of claim 6, wherein the center rod is further configured to pull back the pushed-out cutting blade.

9. The surgical instrument as claimed in claim 2, wherein the handle portion is further provided with an energizing button for controlling a high frequency energy generator to deliver high frequency energy to the handle electrode.

10. The surgical instrument of claim 1, wherein the handle portion is reusable and the actuator is disposable.

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