CN209932956U

CN209932956U - Multidirectional adjustable electrotome

Info

Publication number: CN209932956U
Application number: CN201822048688.7U
Authority: CN
Inventors: 赵文俊; 盛健; 徐传友
Original assignee: Nanjing Fa Maite Development In Science And Technology Co Ltd
Current assignee: Nanjing Fa Maite Development In Science And Technology Co Ltd
Priority date: 2018-12-06
Filing date: 2018-12-06
Publication date: 2020-01-14
Anticipated expiration: 2028-12-06

Abstract

The utility model discloses a multidirectional adjustable electrotome, which comprises a handle part, a hose part and a cutter head part arranged at the end part of the hose part, wherein the cutter head part is connected with a power supply; the hose part is sleeved with a variable pitch spring, and the variable pitch spring comprises a low-density spring section close to the end part of the hose part and a high-density spring section far away from the end part of the hose part; two pairs of guide wires are arranged in the hose part, and one end of each guide wire is fixed at the end part of the hose part; two control buttons capable of moving back and forth along the handle are arranged on the handle part, each pair of guide lines penetrate out of the hose part and then are respectively connected with one control button, the planes of the two pairs of guide lines in the hose part are crossed and mutually vertical at the central axis of the hose part, and when each control button moves towards different directions, each guide line can be respectively pulled to drive the end part of the hose part and the cutter head part to bend towards different directions. The utility model discloses a nearly tool bit end hose can control the electrotome direction and cut by oneself, makes the operation degree of difficulty reduce to can reduce the operation risk.

Description

Multidirectional adjustable electrotome

Technical Field

The utility model relates to the field of medical equipment, specifically a multidirectional adjustable electrotome.

Background

The endoscope has been used for more than 50 years and goes through the stages from disease diagnosis to disease treatment, and the treatment of some digestive diseases is very effective and reliable and even becomes the first-choice treatment for some diseases. With the development of endoscopic biopsy, EMR (endoscopic mucosal resection) and ESD (endoscopic submucosal dissection) technologies in recent years, the treatment of polyps and early cancers in the digestive tract is becoming a preferred diagnosis and treatment means. Especially plays a key role in the discovery, diagnosis and excision of early cancer. Some special instruments under the endoscope have been developed, however, the operation is still difficult compared with other treatment techniques under the endoscope.

Current methods of EMR manipulation include the following: (1) polyp dissection method: i.e., submucosal injection-dissection method. The method is simple and convenient, and has the widest clinical application; (2) transparent cap method: namely, transparent plastic caps with different specifications and different planes or inclined planes are arranged at the end of the inner lens to attract and cut the pathological changes; (3) ligation with a ligation device: a ligation device is arranged at the head end of the endoscope, after the ligation device under the endoscope is aligned with the lesion to be excised and attracted, a rubber ring is used for sheathing the lesion to form sub-pedicle-like polyp, and then the lesion including the rubber ring is sheathed and electrically cut under the rubber ring; (4) slicing method.

At present, the ESD operation method has the disadvantages of complex steps, long operation time, more related instruments and higher technical requirements. Marking in the operation step (1); (2) injecting under mucosa; (3) pre-cutting peripheral mucosa; (4) stripping the lesion; (5) and (5) treating the wound surface.

At present, EMR and ESD are commonly used to perform surgical operations by combining an electric knife with a high frequency electric generator, in this respect the surgical instrument disclosed in application CN101632603B inserted with the endoscope, the tool has a rotary tool adjustor which enables an operator or an auxiliary operator to easily rotate a tool action mechanism at the distal end of a flexible cord of the tool in a clockwise or counterclockwise direction from a position near an operating head grip of the endoscope, solves the function of rotary adjustment of the tool action mechanism, however, in the operation process, the tool action mechanism is still controlled by the lens and can not change the operation direction by itself, when the electric knife is used for EMR and ESD moving cutting, the endoscope is bent and rotated to realize the direction changing operation of the electric knife, this often results in an unclear surgical field, increased difficulty in operation, and easy perforation due to carelessness.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the defects existing in the prior art, the utility model provides a multidirectional adjustable electrotome which can effectively ensure the bending of the front end of a hose part.

The technical scheme is as follows: in order to solve the technical problem, the utility model discloses a multidirectional adjustable electrotome, which comprises a handle part, a hose part connected with the handle part, and a cutter head part arranged at the end part of the hose part, wherein the cutter head part is connected with a power supply; the hose part is sleeved with a variable pitch spring, wherein the variable pitch spring comprises a low-density spring section close to the end part of the hose part and a high-density spring section far away from the end part of the hose part; two pairs of guide wires are arranged in the hose part, and one end of each guide wire is fixed at the end part of the hose part; two control buttons capable of moving back and forth along the handle are arranged on the handle part, each pair of guide lines penetrate out of the hose part and then are respectively connected with one control button, the planes of the two pairs of guide lines in the hose part are crossed and mutually vertical at the central axis of the hose part, and when each control button moves towards different directions, each guide line can be respectively pulled to drive the end part of the hose part and the cutter head part to bend towards different directions.

Wherein the length of the low-density spring section is greater than 0 and less than 1/2 of the overall length of the variable pitch spring.

Preferably, a threading plate is arranged in the handle part, two pairs of threading holes are formed in the threading plate, the two pairs of threading holes are symmetrically arranged by taking a plane where a pair of guide lines perpendicular to the central axis of the control button in the hose part are located as a symmetrical plane, and the two pairs of guide lines respectively penetrate through the two pairs of threading holes and are connected to the closest control button.

Furthermore, a wire distributing plate is arranged in the handle part, two pairs of wire distributing beads are arranged on the wire distributing plate, the two pairs of wire distributing beads are respectively coplanar with the planes of the guide wires, and each guide wire respectively penetrates through the wire distributing beads coplanar with the guide wires.

Furthermore, the front end and the rear end of the control button are respectively connected with the inner wall of the handle part through springs.

Preferably, the plane of one pair of guide lines in the hose part is perpendicular to the central axes of the two control buttons, and the plane of the other pair of guide lines is parallel to the central axes of the two control buttons.

Furthermore, the guide wire is a conductor and is connected with the cutter head part, and the cutter head part is connected with a power supply through the guide wire.

Furthermore, at least one of the wire distributing plate and the threading plate is a conductor, an electrode connected with a power supply is arranged at the tail part of the handle part, and the electrode is connected with the wire distributing plate or the threading plate made of conductor materials and supplies power to the cutter head part through a guide wire.

Preferably, the variable pitch spring is wrapped by a plastic wrapping layer.

Has the advantages that: the utility model discloses a multidirectional adjustable electrotome, when carrying out EMR, ESD or other complicated operations under the endoscope operation, let the camera lens of endoscope specialize in observing the function during operation, near tool bit end hose can control the electrotome direction and cut by oneself, makes the operation degree of difficulty reduce, and can reduce the operation risk; secondly, the variable pitch spring of the utility model can effectively ensure the bending of the hose near the cutter head part, and avoid the problem of error in the cutting direction of the electric knife caused by the bending of other parts of the hose part due to the wire pulling operation; distortion and deformation that can effectual prevention hose portion can more effectual deformation of guaranteeing its head end.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a variable pitch spring according to the present invention;

FIG. 3 is a schematic view showing the distribution of the threading plate and the threading holes;

FIG. 4 is a schematic view showing the distribution of the branch boards and the branch beads of the present invention;

FIG. 5 is a schematic cross-sectional view of the middle hose portion and the variable pitch spring according to the present invention;

FIG. 6 is a schematic view showing the connection and movement direction of the guide wires of the hose portion.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The utility model discloses a multidirectional adjustable electrotome as shown in fig. 1 to 5, including handle portion 1, the hose portion 2 of being connected with handle portion 1, connect in the head portion 3 of hose portion 2 tip, head portion 3 connects the power, and wherein, hose portion 2 is solid hose or hollow hose, in the utility model discloses preferred solid hose.

Two pairs of guide wires 4 are penetrated in the hose part 2, the guide wires 4 are parallel to each other, and a hole for each guide wire 4 to penetrate is arranged in the hose part 1. One end of each guide wire 4 is fixed at the end part of the hose part and is respectively contacted with or connected with the cutter head part 3; two coaxial control buttons 5 capable of moving back and forth along the handle part are arranged in the handle part 1, each pair of guide lines 4 penetrate out of the hose part 2 and are respectively connected with one control button 5, the planes of the two pairs of guide lines 4 in the hose part 2 are crossed and mutually perpendicular at the central axis of the hose part 2, and when each control button 5 moves towards different directions, each guide line 4 can be respectively pulled to drive the hose part 2 to bend so as to drive the cutter head part 3 to turn. A variable pitch spring 8 is sleeved outside the hose part 2, wherein the variable pitch spring 8 comprises a low-density spring section 801 close to the end part of the hose part and a high-density spring section 802 far away from the end part of the hose part, and the length of the low-density spring section 801 is more than 0 and is less than 1/2 of the overall length of the variable pitch spring 8; wherein the variable pitch spring 8 is coated with a plastic coating layer 10. The variable pitch spring can effectively prevent the hose part from being distorted and deformed, and can more effectively ensure the deformation of the head end of the hose part.

Still install threading board 6 in the handle portion 1, the central axis setting of threading board 6 perpendicular to handle portion 1 is provided with two pairs of through wires holes 61 on threading board 6, and two pairs of through wires holes 61 use the plane of a pair of guide wire 4 of two control button 5 central axes of perpendicular to in hose portion 2 as the plane of symmetry and set up, and two pairs of guide wire 4 pass these two pairs of through wires holes 61 respectively, and be connected to on the control button 5 that is closest. A distributing plate 7 parallel to the threading plate 6 is further arranged in the handle part 1, two pairs of distributing beads 701 are arranged on the distributing plate 7, the two pairs of distributing beads 701 are respectively coplanar with the planes of the guide lines 4, and the guide lines 4 respectively penetrate through the distributing beads 701 coplanar with the guide lines 4. In the hose part 2, a plane on which one pair of guide lines 4 are positioned is perpendicular to the central axes of the two control buttons 5, and a plane on which the other pair of guide lines 4 are positioned is parallel to the central axes of the control buttons 5. The front end and the rear end of the control button 5 are respectively connected with the inner wall of the handle part through a spring 9.

In order to supply power to the knife head part 3, the material of each guide wire 4 is selected to be a conductor, the knife head part 3 is connected with a power supply through the guide wire 4, at least one of the distributing board 7 and the threading board 6 is a conductor, an electrode 11 connected with the power supply is also arranged on the tail part of the handle part 1, the electrode 11 is connected with the distributing board 7 or the threading board 6 made of the conductor material, and the power is supplied to the knife head part 3 through the guide wire 4.

As shown in fig. 1, 2 and 5, the guide lines 4 in the hose portion 2 are arranged in parallel to each other, the guide lines 4 cannot be kept in a relatively parallel state after penetrating out of the hose portion 2 and entering the handle portion 1, and because the relative position difference exists between the rotary disc 5 and the guide lines 4 and the hose portion 2, the guide lines 4 cannot accurately and effectively control the bending direction and amplitude of the hose portion 2 under the condition that the threading plate 6 and the thread dividing plate 7 are not provided, and after the thread dividing plate 7 and the thread dividing plate 6 are provided, four thread holes 61 with absolutely fixed positions are respectively provided on the two plates, so that the guide lines 4 are guided and fixed through the thread holes 61, the displacement of the guide lines 4 is limited, and the guide lines 4 can drive the hose portion 2 to accurately steer. Simultaneously the setting of variable pitch spring can effectually prevent the distortion and the deformation of hose portion, can more effectual deformation of guaranteeing its head end.

The method of using the present invention will be further explained with reference to fig. 6.

The scalpel head part 3 and the hose part 2 are conveyed to a surgical site for surgery through an endoscope channel or other auxiliary channels, the handle part 1 is held by a hand to operate, one of the control buttons is moved forwards, a guide wire 4 connected or contacted with the A position of the scalpel head part 3 is pulled, the hose part 2 drives the scalpel head part 3 to bend towards the X + direction, the bending is recovered after the restoration, the control button is moved backwards in the same way, the guide wire 4 connected or contacted with the B position of the scalpel head part 3 is pulled, the hose part 2 drives the scalpel head part 3 to bend towards the X-direction, and the bending is recovered after the restoration, the description is suitable for the bending of the X-direction axis and the X-direction under the control of a single control button, a control button is added in the same way, and the Y-axis Y + can be controlled by respectively pulling the guide wire 4 connected or contacted with the C, D position of the scalpel head part 3, The Y-bending in two directions can combine any bending angle on an X, Y shaft plane through the mutual matching of the control buttons, the operation in the fixed angle and direction is carried out in the operation process, and the endoscope channels or the auxiliary channels are added to assist the moving operation, thereby achieving better operation effect. The operator pastes the negative plate of the high-frequency generator on the body surface of the patient, connects another cable to the handle electrode 11, when the cutter head of the cutter head part 3 contacts with the tissue of the patient, the operator can step on the generator to enable the high-frequency current to pass through the electrode 11, the threading plate 6 of the conductor material and the guide wire 4 of the conductor material, the high-frequency current is conducted to the metal spherical electrotome part of the cutter head part 3 and then is transmitted to the human tissue contacting with the generator, and a complete loop is formed by the human body, the negative plate and the guide wire, the operation tissue can generate instant high temperature to change the property of the operation tissue, or is instantly gasified or heated to deteriorate, and the operation tissue is electrosection or electrocoagulation depending on the generator mode selected by the operator.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a multidirectional adjustable electrotome which characterized in that: the electric knife comprises a handle part, a soft tube part connected with the handle part and a knife head part arranged at the end part of the soft tube part, wherein the knife head part is connected with a power supply; the hose part is sleeved with a variable pitch spring, wherein the variable pitch spring comprises a low-density spring section close to the end part of the hose part and a high-density spring section far away from the end part of the hose part; two pairs of guide wires are arranged in the hose part, and one end of each guide wire is fixed at the end part of the hose part; two control buttons capable of moving back and forth along the handle are arranged on the handle part, each pair of guide lines penetrate out of the hose part and then are respectively connected with one control button, the planes of the two pairs of guide lines in the hose part are crossed and mutually vertical at the central axis of the hose part, and when each control button moves towards different directions, each guide line can be respectively pulled to drive the end part of the hose part and the cutter head part to bend towards different directions.

2. A multi-directional adjustable electrotome according to claim 1, wherein: the length of the low-density spring section is greater than 0 and less than 1/2 of the overall length of the variable pitch spring.

3. A multi-directional adjustable electrotome according to claim 1, wherein: the handle portion is internally provided with a threading plate, two pairs of threading holes are formed in the threading plate, the two pairs of threading holes are symmetrically arranged by taking a plane where a pair of guide lines perpendicular to the central axis of the control button are located in the hose portion as a symmetry plane, and the two pairs of guide lines respectively penetrate through the two pairs of threading holes and are connected to the closest control button.

4. A multi-directional adjustable electrotome according to claim 3, wherein: the handle part is internally provided with a wire distributing plate, the wire distributing plate is provided with two pairs of wire distributing beads, the two pairs of wire distributing beads are respectively coplanar with the planes of the guide wires, and each guide wire respectively penetrates through the wire distributing beads coplanar with the guide wires.

5. A multi-directional adjustable electrotome according to claim 4, wherein: at least one of the wire distributing plate and the threading plate is a conductor, an electrode connected with a power supply is arranged at the tail part of the handle part, and the electrode is connected with the wire distributing plate or the threading plate made of conductor materials and supplies power to the cutter head part through a guide wire.

6. A multi-directional adjustable electrotome according to claim 1, wherein: the handle part is internally provided with a wire distributing plate, the wire distributing plate is provided with two pairs of wire distributing beads, the two pairs of wire distributing beads are respectively coplanar with the planes of the guide wires, and each guide wire respectively penetrates through the wire distributing beads coplanar with the guide wires.

7. A multi-directional adjustable electrotome according to claim 1, wherein: the front end and the rear end of the control button are respectively connected with the inner wall of the handle part through springs.

8. A multi-directional adjustable electrotome according to claim 1, wherein: the plane of one pair of guide lines in the hose part is perpendicular to the central axes of the two control buttons, and the plane of the other pair of guide lines is parallel to the central axes of the two control buttons.

9. A multi-directional adjustable electrotome according to claim 1, wherein: the guide line is a conductor and is connected with the cutter head part, and the cutter head part is connected with the power supply through the guide line.

10. A multi-directional adjustable electrotome according to claim 1, wherein: the variable pitch spring is coated with a plastic coating layer.