WO2022183758A1

WO2022183758A1 - Telescopic scalpel for spine, and scalpel head

Info

Publication number: WO2022183758A1
Application number: PCT/CN2021/128726
Authority: WO
Inventors: 张伟; 岳欣; 晋良翠
Original assignee: 江苏邦士医疗科技有限公司
Priority date: 2021-03-03
Filing date: 2021-11-04
Publication date: 2022-09-09
Also published as: CN112807079A

Abstract

A telescopic scalpel for the spine, and a scalpel head (100). The telescopic scalpel comprises a scalpel head (100), a scalpel bar (2) and a handle (4), wherein the scalpel head (100) comprises a switch (6) disposed in an inner cavity of the handle (4); the scalpel head (100) comprises a primary electrode (110), a secondary electrode (120) and a tertiary electrode (130), which are sequentially nested from inside to outside; the primary electrode (110) is provided with an insulating sleeve (111) sleeved on the outer side, and an end thereof is connected to an electric wire (5) via a stainless steel needle core (7) to access a power supply; the outer side of the stainless steel needle core (7) is fitted and connected to a first insulating layer (112); the secondary electrode (120) and the primary electrode (110) are connected or disconnected after extension and retraction, so as to form different cutting loops; the tertiary electrode (130) is fixedly connected to the handle (4) by means of a second stainless steel tube (131); and a first movement gap is respectively reserved between the insulating sleeve (111) and a first stainless steel tube (121), and between the first insulating layer (112) and the first stainless steel tube. The scalpel can adapt to the cutting and treatment of spinal wounds having different areas, so as to reduce the replacement of a scalpel during spinal surgery and shorten the treatment time of spinal surgery.

Description

Retractable scalpel and scalpel head for spine

technical field

The invention relates to the technical field of medical instruments, in particular to a retractable scalpel for spinal surgery.

Background technique

Existing plasma surgery systems mostly use plasma scalpels in the form of fixed working tips. When performing internal surgery on the spine, working tips with different working areas need to be used for different parts. Surgery time has a certain impact.

Although Chinese Patent No. 201420179133.5, titled an electric knife pen, discloses that the electric knife pen includes a handle, an electrode and an electric knife head connected to the handle, the electric knife head is tubular, the electrodes are telescopically arranged in the electric knife head, and the handle can be A sliding block is provided on the movable side, the sliding block is connected with the electrode, and the electrode is controlled to extend or retract the electric knife head by moving the sliding block. In the electric knife pen provided by the present invention, the electrodes are telescopically arranged in the electric knife head, and the length can be adjusted according to needs during use, so as to avoid damage outside the surgical site, greatly improve the safety performance, and be very convenient to use; when not in use, the electrodes are Retract the electric knife head for protection.

Although the above-mentioned electric knife pen discloses that the scalpel can be retracted, it can only be stored and used, and it still cannot solve the technical problem of accurate and rapid switching of the existing scalpel during the use of the same operation, especially in the case of delicate surgery and large area When the operation needs to be completed in the same operation, it is even more difficult to meet the needs of the spine scalpel during use, resulting in the replacement of spine surgery and the longer operation time, and increasing the possibility of cross-infection during the operation.

SUMMARY OF THE INVENTION

In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a scalpel head that can quickly switch the size of different surgical areas and the shape of the blade head through a telescopic method, so as to meet the requirements of spine surgery, and save the need to replace different scalpels. A retractable scalpel for spine surgery that shortens the time of spine surgery and reduces cross-infection.

The technical scheme adopted in the present invention is: a retractable scalpel for the spine, including a cutter head, a cutter bar and a handle for connecting it, the scalpel also includes a switch placed in the inner cavity of the handle, and the cutter head includes from the inside to the outside The first-level electrode, the second-level electrode, and the third-level electrode are arranged in a nested order, wherein:

An insulating sleeve is set between the primary electrode and the secondary electrode, and the end is connected to the switch and the wire in turn through the stainless steel needle core to obtain power.

The secondary electrode, which is connected or disconnected with the primary electrode after expansion and contraction to form different cutting circuits, is placed outside the insulating sleeve, and the first and second insulating layers of the stainless steel tube are sleeved in sequence near the end of the stainless steel needle core;

The tertiary electrode is placed on the outer side of the second insulating layer, and is fixedly connected by the second stainless steel tube fixed connection handle, and the outer side of the second stainless steel tube is also covered with a third insulating sleeve;

A movable gap 1 is reserved between the insulating sleeve and the first insulating layer and the stainless steel pipe 1 arranged outside;

A gap 2 is reserved between the second insulating layer and the stainless steel pipe 2;

The stainless steel needle core is fixedly connected to the slider placed on the handle to drive the primary electrode to expand and contract, so as to connect the primary electrode and the secondary electrode, or connect the primary electrode and the tertiary electrode to work.

Preferably, the part outside the second insulating layer between the secondary electrode and the second stainless steel tube is provided with a fourth insulating layer.

Preferably, the outer side of one end of the secondary electrode close to the primary electrode is an arc-shaped transition structure.

Preferably, the cutter head is bent by an angle θ relative to the axial direction of the cutter shank.

Preferably, the insulating sleeve is made of ceramic material.

Preferably, the fourth insulating layer is made of polytetrafluoroethylene, which is commonly referred to as Teflon material.

Preferably, the stainless steel tube 1 of the secondary electrode and the stainless steel tube 2 of the tertiary electrode are respectively connected to a switch, and each switch is also connected to the power supply through a wire, so as to realize the separate control switch control of the secondary electrode and the tertiary electrode. .

Preferably, the primary electrode and the secondary electrode are made of molybdenum metal, and the surgical effect of the electrode is better.

Preferably, the primary electrode is welded to the stainless steel needle core, and the secondary electrode is welded to the stainless steel tube, so as to ensure the stability of the connection between the primary and secondary electrodes, the stainless steel core and the stainless steel tube. A retractable scalpel blade for spine, the blade includes a primary electrode, a secondary electrode, and a tertiary electrode sequentially arranged from the inside to the outside, wherein: the primary electrode and the secondary electrode are sleeved with an insulating sleeve The end of the tube is connected to the switch and the wire through the stainless steel needle core in turn to obtain the power supply, and the stainless steel needle core is located at the outer position of the cutter bar to fit and connect to the first insulating layer;

Compared with the prior art, the beneficial effects of the present invention are:

The retractable scalpel for the spine of the present invention uses a slider to push the primary electrode to contact or separate from the motor, so as to realize the surgical cutting of two types of spinal wounds, so that the scalpel can be adapted to the cutting and treatment of different sizes of spinal wounds. The need and frequency of replacement of scalpels during spine surgery are reduced, the processing time of spine surgery is shortened, the physical strength of doctors and nurses is saved, and the difficulty of surgery is reduced.

In addition, the retractable scalpel for the spine of the present invention is provided with a first insulating layer before the primary electrode contacts with the secondary electrode, and a second insulating layer and an insulating layer are provided at the stroke position between the secondary electrode and the tertiary motor contact. The sleeve ensures that neither the secondary electrode nor the tertiary electrode works during the process of pushing the slider forward or backward, avoiding potential surgical risks and ensuring the safety performance of the scalpel.

Description of drawings

Figure 1 is a front view of one direction of a retractable scalpel for the spine;

Fig. 2 is the enlarged view of the place A of Fig. 1;

FIG. 3 is an enlarged cross-sectional view of the cutter head 100;

Figure 4 is a view from another direction of the retractable scalpel for the spine;

Fig. 5 is the A-A sectional view of Fig. 4;

Among them: 1-slider, 2-tool bar, 3-slider two, 4-handle, 5-wire, 6-switch, 7-stainless steel needle core;

100- cutter head, 110- primary electrode, 111- insulating sleeve, 112- first insulating layer;

120-secondary electrode, 121-stainless steel tube one, 122-second insulating layer, 123-fourth insulating layer;

130-three-stage electrode, 131-stainless steel tube two, 132-third insulating sleeve; 140-active gap one, 150-gap two.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", etc. is based on the attached The orientation or positional relationship shown in the figures is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated combination or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a reference to the present invention. Invention limitations. In addition, in the description process of the embodiments of the present invention, the positional relationships of components such as "upper", "lower", "front", "rear", "left" and "right" in all figures are based on FIG. 1 .

As shown in FIG. 1 and FIG. 4 , the retractable scalpel for the spine includes a cutter head 100 and a cutter bar 2 and a handle 4 for connecting it. The scalpel also includes a switch 6 placed in the inner cavity of the handle 4, and as shown in the figure 2 and FIG. 3 , the cutter head 100 includes a primary electrode 110, a secondary electrode 120, and a tertiary electrode 130, which are sequentially nested from the inside to the outside, wherein:

An insulating sleeve 111 is sleeved between the primary electrode 110 and the secondary electrode 120, and the end is connected to the switch 6 and the wire 5 through the stainless steel needle core 7 in turn to obtain power, and the stainless steel needle core 7 is located at the outer position of the cutter bar 2. the first insulating layer 112;

The secondary electrode 120 is connected or disconnected with the primary electrode 110 after expansion and contraction to form different cutting circuits, and is placed on the outside of the insulating sleeve 111. two insulating layers 122;

The tertiary electrode 130 is placed on the outer side of the second insulating layer 122, and is fixedly connected by the second stainless steel tube 131 fixedly connecting the handle 4, and the outer side of the second stainless steel tube 131 is also covered with a third insulating sleeve 132;

A movable gap-140 is reserved between the insulating sleeve 111 and the first insulating layer 112 and the stainless steel tube-121 arranged outside;

A second gap 150 is reserved between the second insulating layer 122 and the second stainless steel tube 131;

The stainless steel needle core 7 is fixedly connected to the slider 1 placed on the handle 4 to drive the primary electrode 110 to expand and contract, thereby connecting the primary electrode and the secondary electrode, or connecting the primary electrode and the tertiary electrode to work.

When the retractable scalpel of the present invention is in operation, the slider is pushed forward, the secondary electrode and the tertiary electrode are connected, and a loop is formed with the protruding primary electrode, so that the operation can be performed on a small surgical area and a precise position. Surgery; when the slider is pushed back, the primary electrode and the secondary electrode are connected, and form a circuit with the tertiary electrode, which can perform surgery on a position with a large surgical area, and in the same operation when encountering fine surgery and large-scale surgery In the case of finishing in the middle, using this scalpel can save the process of changing different scalpels, shorten the operation time, and reduce cross-infection. In addition, during the process of pushing the slider forward or backward, the electrode does not work, avoiding potential surgical risk.

That is to say, when the slider is pushed to the front, the primary electrode is the positive electrode, and the secondary electrode and the tertiary electrode are the negative electrode, forming a loop (ie: a cut is formed between the primary electrode and the secondary electrode, the primary electrode and the tertiary electrode are the negative electrode). It can also be cut between the stage electrodes, with different areas). When the slider is pushed to the back, the primary electrode and the secondary electrode are the positive electrode, and the tertiary electrode is the negative electrode, forming a loop, because the primary electrode is retracted, so the cutting surface is between the secondary electrode and the tertiary electrode. The pole and secondary electrodes are conductive, and surgery can be performed on the wound area between the above two conditions.

As shown in FIG. 3 , the tertiary electrode 130 is the second stainless steel tube 131 , that is to say, the tertiary electrode 130 is the second stainless steel tube, which can reduce the number of parts of the electrode and the scalpel, reduce the processing and assembly time, and improve the assembly efficiency.

It can also be seen from FIG. 2 and FIG. 3 that a fourth insulating layer 123 is provided on the outer side of the second insulating layer 122 of the retractable scalpel between the secondary electrode 120 and the second stainless steel tube 131 to ensure the minimum structure. Under the premise of improvement, the gap 2 150 between the inner wall of the stainless steel tube 131 and the second insulating layer 122 is ensured, so that the tertiary electrode 130 can smoothly contact or separate from the secondary electrode under the driving of the slider 2. In a more preferred embodiment, the outer side of one end of the secondary electrode 120 close to the primary electrode 110 is an arc-shaped transition structure, thereby avoiding secondary incisions on the surgical site and improving the safety performance of the operation.

As can be seen from FIG. 1 , the cutter head 100 is bent at an angle θ relative to the axial direction of the cutter bar 2 so as to perform local in-depth surgery, and the specific bending direction is 15-25 degrees, preferably 20 degrees.

For a better retractable scalpel, the insulating sleeve 111 is made of ceramic material. The fourth insulating layer 123 is made of Teflon material, that is, made of polytetrafluoroethylene. Both have good insulating properties and durability.

A more preferred embodiment of the retractable scalpel is: the stainless steel tube 1 121 of the secondary electrode 120 and the stainless steel tube 2 131 of the tertiary electrode 130 are respectively connected to a switch, and each switch is also connected to the power supply through a wire, so as to realize Separate control switch control for the secondary electrode and the tertiary electrode. This electrical connection method can increase the position state of the secondary electrode and the tertiary electrode when they are opened separately. The plan for the surgical contact area, the use of more plans, the effect is better , but need to be cleaned and disinfected when necessary.

In a preferred retractable scalpel, the primary electrode 110 and the secondary electrode 120 are made of molybdenum metal, and the surgical effect of the electrodes is better. Moreover, the primary electrode 110 is welded to the stainless steel needle core 7, and the secondary electrode 120 is welded to the stainless steel tube one 121, thereby ensuring the stability of the connection between the primary and secondary electrodes and the stainless steel core and the stainless steel tube one. As shown in FIG. 2 and FIG. 3 , the retractable scalpel head for the spine only needs to include the first-stage electrode 110 , the second-stage electrode 120 , and the third-stage electrode 130 arranged in sequence from the inside to the outside, wherein : The primary electrode 110, an insulating sleeve 111 is set between the secondary electrode 120, the end is connected to the switch 6 and the wire 5 through the stainless steel needle 7 to obtain the power supply, and the stainless steel needle 7 is located at the outer position of the cutter bar 2. connecting the first insulating layer 112;

The stainless steel needle core 7 is fixedly connected to the slider 1 placed on the handle 4 to drive the primary electrode 110 to expand and contract, thereby connecting the primary electrode and the secondary electrode, or connecting the primary electrode and the tertiary electrode to work. It can also achieve better spinal surgery results.

The embodiment of the present invention announces the preferred embodiment, but is not limited to this, those of ordinary skill in the art can easily understand the spirit of the present invention according to the above-mentioned embodiment, and make different extensions and changes, However, as long as they do not depart from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

The retractable scalpel for the spine is characterized in that it comprises a cutter head (100), a cutter bar (2) and a handle (4) for connecting the same, and the scalpel further comprises a switch (6) placed in the inner cavity of the handle (4). ), and the cutter head (100) includes a first-level electrode (110), a second-level electrode (120), and a third-level electrode (130) that are sequentially nested from inside to outside, wherein:

An insulating sleeve (111) is sleeved between the primary electrode (110) and the secondary electrode (120), and the end is connected to the switch (6) and the wire (5) through the stainless steel needle core (7) in turn to obtain power, and the stainless steel The needle core (7) is located at the outer position of the cutter bar (2) and is connected to the first insulating layer (112);

The secondary electrode (120), which is connected or disconnected with the primary electrode (110) after expansion and contraction to form different cutting circuits, is placed outside the insulating sleeve (111) and close to the end of the stainless steel needle core (7) in turn. A stainless steel tube one (121) and a second insulating layer (122) are sleeved;

The tertiary electrode (130) is placed on the outside of the second insulating layer (122), and is fixedly connected to the handle (4) through the second stainless steel tube (131), and the second stainless steel tube (131) is also covered with a third insulating sleeve (131). 132);

A movable gap 1 (140) is reserved between the insulating sleeve (111) and the first insulating layer (112) and the stainless steel pipe 1 (121) arranged on the outside thereof;

A gap two (150) is reserved between the second insulating layer (122) and the stainless steel pipe two (131);

The stainless steel needle core (7) is fixedly connected to the slider (1) placed on the handle (4) to drive the primary electrode (110) to expand and contract, thereby connecting the primary electrode and the secondary electrode, or connecting the primary electrode and tertiary electrodes work.
The retractable scalpel according to claim 1, characterized in that: a fourth insulating layer (123) is provided on the outer part of the second insulating layer (122) between the secondary electrode (120) and the second stainless steel tube (131). ).
The retractable scalpel according to claim 1, characterized in that: the outer side of one end of the secondary electrode (120) close to the primary electrode (110) is an arc-shaped transition structure, and the cutter head (100) is opposite to the cutter bar (100). 2) The axis direction is bent by an angle θ.
The retractable scalpel according to claim 3, wherein the insulating sleeve (111) is made of ceramic material, and the fourth insulating layer (123) is made of polytetrafluoroethylene.
The retractable scalpel according to claim 4, wherein the first stainless steel tube (121) of the secondary electrode (120) and the second stainless steel tube (131) of the tertiary electrode (130) are respectively connected to a switch, and each A switch also connects to power via a wire.
The retractable scalpel according to claim 5, wherein the primary electrode (110) and the secondary electrode (120) are made of molybdenum metal.
The retractable scalpel according to claim 1, wherein the primary electrode (110) is welded to the stainless steel needle core (7), and the secondary electrode (120) is welded to the stainless steel tube one (121).
The retractable scalpel head for spine is characterized by:

The cutter head (100) includes a primary electrode (110), a secondary electrode (120), and a tertiary electrode (130) sequentially arranged from the inside to the outside, wherein: the primary electrode (110) and the secondary electrode An insulating sleeve (111) is sleeved between (120), and the end is connected to the switch (6) and the wire (5) through the stainless steel needle core (7) in turn to obtain the power supply, and the stainless steel needle core (7) is located at the cutter bar (2) at the same time. The outer position is attached and connected to the first insulating layer (112);

The secondary electrode (120), which is connected or disconnected with the primary electrode (110) after expansion and contraction to form different cutting circuits, is placed outside the insulating sleeve (111) and close to the end of the stainless steel needle core (7) in turn. A stainless steel tube one (121) and a second insulating layer (122) are sleeved;

The tertiary electrode (130) is placed on the outside of the second insulating layer (122), and is fixedly connected to the handle (4) through the second stainless steel tube (131), and the second stainless steel tube (131) is also covered with a third insulating sleeve (131). 132);

A movable gap 1 (140) is reserved between the insulating sleeve (111) and the first insulating layer (112) and the stainless steel pipe 1 (121) arranged on the outside thereof;

A gap two (150) is reserved between the second insulating layer (122) and the stainless steel pipe two (131);

The stainless steel needle core (7) is fixedly connected to the slider (1) placed on the handle (4) to drive the primary electrode (110) to expand and contract, thereby connecting the primary electrode and the secondary electrode, or connecting the primary electrode and tertiary electrodes work.