Retractable scalpel and scalpel head for spine

Abstract

The invention discloses a retractable scalpel for spine and a scalpel head. The retractable scalpel comprises a scalpel head and a shank and a handle for connecting the scalpel head. The scalpel head comprises a switch placed in the inner cavity of the handle, and the scalpel head comprises a primary electrode, a secondary electrode, and a tertiary electrode arranged in sequence from the inside to the outside. An insulating sleeve is sleeved on the outer side of the primary electrode and the end is connected to an electric wire through a stainless steel needle core to obtain power. The outer side of the stainless steel needle core is fitted and connected to a first insulating layer. The secondary electrode is connected or disconnected with the primary electrode after being retracted to form different cutting circuits. The tertiary electrode is fixedly connected to the handle through a stainless steel pipe 2. An active gap 1 is reserved between the insulating sleeve and the first insulating layer and a stainless steel pipe 1 arranged on the outer side thereof. The scalpel can adapt to the cutting and treatment of spinal wounds of various different areas, reduce the replacement of scalpels during spinal surgery, shorten the treatment time of spinal surgery, and reduce cross infection.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a retractable scalpel for spinal surgery. Background Art

[0002] Existing plasma surgical systems mostly use plasma scalpels with fixed working tips. When performing internal spinal surgeries, working tips with different working areas are required for different parts. The conversion of surgical instruments has a certain impact on the accuracy and time of the surgery.

[0003] Although Chinese patent 201420179133.5, entitled "An electric knife pen", discloses an electric knife pen comprising a handle, an electrode and an electric knife head connected to the handle, the electric knife head is tubular, the electrode is telescopically arranged in the electric knife head, a slider is movably arranged on the handle, the slider is connected to the electrode, and the electrode is controlled to extend or retract into the electric knife head by moving the slider. In the electric knife pen provided by the present invention, the electrode is telescopically arranged in the electric knife head, and the length can be adjusted as needed during use to avoid causing damage outside the surgical site, the safety performance is greatly improved, and it is also very convenient to use; when not in use, the electrode is retracted into the electric knife head to play a protective role.

[0004] Although the above-mentioned electric surgical pen discloses that the scalpel can be retracted, it can only be stored and used, and still cannot solve the technical problem of accurate and rapid switching of existing scalpels during the same operation. Especially when delicate surgery and large-area surgery need to be completed in the same operation, it is even more difficult to meet the needs of the spinal scalpel during use, resulting in longer replacement and operation time for spinal surgery, and increasing the possibility of cross infection during the operation. Summary of the invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a retractable scalpel for spinal surgery that can quickly switch between different surgical area sizes and different blade shapes in a telescopic manner to meet the requirements of spinal surgery, eliminating the time and operation process of replacing different scalpels, shortening the time of spinal surgery, and reducing cross-infection.

[0006] The technical solution adopted by the present invention is: a retractable scalpel for spine, comprising a scalpel head and a scalpel rod and a handle for connecting the scalpel head, the scalpel further comprising a switch placed in the inner cavity of the handle, and the scalpel head comprises a primary electrode, a secondary electrode, and a tertiary electrode which are nested and arranged in sequence from the inside to the outside, wherein:

[0007] 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 sequence through the stainless steel needle core to obtain power. At the same time, the stainless steel needle core is located outside the knife rod and fits the first insulating layer;

[0008] The secondary electrode is connected or disconnected with the primary electrode after expansion and contraction to form different cutting circuits, and is placed outside the insulating sleeve, and the end near the stainless steel needle core is sequentially covered with a stainless steel tube first and a second insulating layer;

[0009] The tertiary electrode is placed outside the second insulating layer and is fixedly connected to the second stainless steel pipe by a second fixed connection handle, and the outer side of the second stainless steel pipe is also covered with a third insulating sleeve;

[0010] A movable gap is reserved between the insulating sleeve and the first insulating layer and a stainless steel pipe arranged outside the insulating sleeve;

[0011] A gap 2 is reserved between the second insulating layer and the second stainless steel tube;

[0012] The stainless steel needle core is fixedly connected to the slider placed on the handle to drive the primary electrode to extend and retract, thereby connecting the primary electrode and the secondary electrode, or connecting the primary electrode and the tertiary electrode to work.

[0013] Preferably, a fourth insulating layer is provided on the outer portion of the second insulating layer between the secondary electrode and the second stainless steel tube.

[0014] Preferably, the outer side of one end of the secondary electrode close to the primary electrode is an arc-shaped transition structure.

[0015] Preferably, the cutter head is bent at an angle θ relative to the axial direction of the cutter rod.

[0016] Preferably, the insulating sleeve is made of ceramic material.

[0017] Preferably, the fourth insulating layer is made of polytetrafluoroethylene, commonly known as Teflon material.

[0018] 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 a power source through a wire, thereby realizing separate switch control of the secondary electrode and the tertiary electrode.

[0019] Preferably, the primary electrode and the secondary electrode are made of molybdenum metal, and the surgical effect of the electrodes is better.

[0020] Preferably, the primary electrode is welded to the stainless steel needle core, and the secondary electrode is welded to the stainless steel tube 1, so as to ensure the stability of the connection between the primary and secondary electrodes and the stainless steel core and the stainless steel tube 1. A retractable scalpel head for the spine, the head comprising a primary electrode, a secondary electrode, and a tertiary electrode arranged in sequence from the inside to the outside, wherein: an insulating sleeve is arranged between the primary electrode and the secondary electrode, and the end is connected to a switch and a wire in sequence through the stainless steel needle core to obtain power, and the stainless steel needle core is located outside the knife rod and is in contact with the first insulating layer;

[0021] The secondary electrode is connected or disconnected with the primary electrode after expansion and contraction to form different cutting circuits, and is placed outside the insulating sleeve, and the end near the stainless steel needle core is sequentially covered with a stainless steel tube first and a second insulating layer;

[0022] The tertiary electrode is placed outside the second insulating layer and is fixedly connected to the second stainless steel pipe by a second fixed connection handle, and the outer side of the second stainless steel pipe is also covered with a third insulating sleeve;

[0023] A movable gap is reserved between the insulating sleeve and the first insulating layer and a stainless steel pipe arranged outside the insulating sleeve;

[0024] A gap 2 is reserved between the second insulating layer and the second stainless steel tube;

[0025] The stainless steel needle core is fixedly connected to the slider placed on the handle to drive the primary electrode to extend and retract, thereby connecting the primary electrode and the secondary electrode, or connecting the primary electrode and the tertiary electrode to work.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The retractable scalpel for the spine of the present invention uses a slider to push the primary electrode to contact or separate with the motor to achieve surgical cutting of two types of spinal wounds. The scalpel can be used to adapt to the cutting and treatment of spinal wounds of different sizes, reducing the need and frequency of replacement of the scalpel during spinal surgery, shortening the processing time of spinal surgery, saving the physical strength of doctors and nurses, and reducing the difficulty of surgery.

[0028] In addition, the retractable scalpel for the spine of the present invention sets a first insulating layer before the primary electrode contacts the secondary electrode, and sets a second insulating layer and an insulating sleeve at the stroke position between the secondary electrode and the tertiary motor contact, to ensure that the secondary electrode and the tertiary electrode do not work during the forward or backward push of the slider, thereby avoiding potential surgical risks and ensuring the safety performance of the scalpel. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A front view of one orientation of a retractable scalpel for the spine;

[0030] Figure 2 for Figure 1 A magnified view of point A;

[0031] Figure 3 is a cross-sectional enlarged view of the cutter head 100;

[0032] Figure 4 Another view of the spine using a retractable scalpel;

[0033] Figure 5 for Figure 4 AA section view;

[0034] Among them: 1-slider, 2-knife rod, 3-slider 2, 4-handle, 5-wire, 6-switch, 7-stainless steel needle core;

[0035] 100-cutter head, 110-primary electrode, 111-insulating sleeve, 112-first insulating layer;

[0036] 120-secondary electrode, 121-stainless steel tube 1, 122-second insulating layer, 123-fourth insulating layer;

[0037] 130-third-level electrode, 131-stainless steel pipe 2, 132-third insulating sleeve; 140-active gap 1, 150-gap 2. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the combination or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, in the description of the embodiments of the present invention, the device positional relationships such as "up", "down", "front", "back", "left", "right" and the like in all the drawings are based on the positions or positional relationships shown in the accompanying drawings. Figure 1 As standard.

[0040] like Figure 1 and Figure 4 As shown, the retractable scalpel for spine includes a scalpel head 100 and a scalpel rod 2 and a handle 4 for connecting the scalpel head 100, and the scalpel also includes a switch 6 placed in the inner cavity of the handle 4, and as shown in FIG. Figure 2 and Figure 3 The cutter head 100 shown includes a primary electrode 110, a secondary electrode 120, and a tertiary electrode 130 which are nested from the inside to the outside, wherein:

[0041] An insulating sleeve 111 is provided between the primary electrode 110 and the secondary electrode 120, and the end thereof is connected to the switch 6 and the wire 5 in sequence through the stainless steel needle core 7 to obtain power. Meanwhile, the stainless steel needle core 7 is located outside the knife rod 2 and is closely connected to the first insulating layer 112;

[0042] 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 the end near the stainless steel needle core 7 is sequentially sleeved with a stainless steel tube 121 and a second insulating layer 122;

[0043] The tertiary electrode 130 is placed outside the second insulating layer 122 and is fixedly connected to the handle 4 through a second stainless steel tube 131, and a third insulating sleeve 132 is also sleeved outside the second stainless steel tube 131;

[0044] An active gap 140 is reserved between the insulating sleeve 111 and the first insulating layer 112 and the stainless steel tube 121 disposed outside thereof;

[0045] A gap 150 is reserved between the second insulating layer 122 and the second stainless steel tube 131;

[0046] 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 extend and retract, thereby connecting the primary electrode and the secondary electrode, or connecting the primary electrode and the tertiary electrode to work.

[0047] When the retractable scalpel of the present invention is in operation, when the slider is pushed forward, the secondary electrode and the tertiary electrode are connected and form a loop with the extended primary electrode, so that surgery can be performed on a location with a small surgical area and requiring precision; when the slider is pushed backward, the primary electrode and the secondary electrode are connected and form a loop with the tertiary electrode, so that surgery can be performed on a location with a large surgical area. In the case where a delicate surgery and a large-area surgery are to be performed in the same operation, the use of this scalpel can save the process of replacing different scalpels, shorten the operation time, and reduce cross infection. In addition, when the slider is pushed forward or backward, the electrode does not work, thereby avoiding potential surgical risks.

[0048] That is to say, when the slider is pushed to the front, the primary electrode is the positive electrode, and the secondary and tertiary electrodes are the negative electrodes, forming a circuit (that is, a cut is formed between the primary and secondary electrodes, and a cut can also be formed between the primary and tertiary electrodes, with different areas). When the slider is pushed to the back, the primary and secondary electrodes are the positive electrodes, and the tertiary electrodes are the negative electrodes, forming a circuit. Because the primary electrode is retracted, the cut surface is between the secondary and tertiary electrodes. The primary and secondary electrodes are conductive, and surgery can be performed on the wound area between the above two situations.

[0049] from Figure 3 As shown, the tertiary electrode 130 is a stainless steel tube 131, that is, the tertiary electrode 130 is a stainless steel tube 2, which can reduce the number of parts of the electrode and the scalpel, reduce processing and assembly time, and improve assembly efficiency.

[0050] from Figure 2 and Figure 3It can also be seen that the portion outside the second insulating layer 122 of the retractable scalpel between the secondary electrode 120 and the second stainless steel tube 131 is provided with a fourth insulating layer 123, which is used to ensure a gap 150 between the inner wall of the stainless steel tube 131 and the second insulating layer 122 under the premise of minimum structural improvement, so that the tertiary electrode 130 can smoothly contact or separate from the secondary electrode under the drive of the slider 2. A better embodiment is that 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 surgical safety.

[0051] from Figure 1 It can be seen that the blade head 100 is bent at an angle θ relative to the axial direction of the blade rod 2 to facilitate local in-depth surgery. The specific bending direction is 15-25 degrees, preferably 20 degrees.

[0052] The insulating sleeve 111 of the more optimal retractable scalpel is made of ceramic material, and the fourth insulating layer 123 is made of Teflon material, that is, polytetrafluoroethylene, which both have good insulation performance and durability.

[0053] A more optimal implementation method 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 a power source through a wire, so as to achieve separate switch control of 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 for the surgical contact area, with more usage options and better effects, but cleaning and disinfection are required when necessary.

[0054] The preferred retractable scalpel has a primary electrode 110 and a secondary electrode 120 made of molybdenum metal, which can achieve better surgical results. 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 121, thereby ensuring the stability of the connection between the primary and secondary electrodes and the stainless steel core and stainless steel tube 1. Figure 2 and Figure 3 As shown, the retractable scalpel blade for the spine only needs the blade 100 to include a primary electrode 110, a secondary electrode 120, and a tertiary electrode 130 arranged in sequence 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 in sequence through the stainless steel needle core 7 to obtain power, and the stainless steel needle core 7 is located at the outer side of the blade rod 2 and is closely connected to the first insulating layer 112;

[0055] 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 the end near the stainless steel needle core 7 is sequentially sleeved with a stainless steel tube 121 and a second insulating layer 122;

[0056] The tertiary electrode 130 is placed outside the second insulating layer 122 and is fixedly connected to the handle 4 through a second stainless steel tube 131, and a third insulating sleeve 132 is also sleeved outside the second stainless steel tube 131;

[0057] An active gap 140 is reserved between the insulating sleeve 111 and the first insulating layer 112 and the stainless steel tube 121 disposed outside thereof;

[0058] A gap 150 is reserved between the second insulating layer 122 and the second stainless steel tube 131;

[0059] 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 extend and retract, thereby connecting the primary electrode and the secondary electrode, or connecting the primary electrode and the tertiary electrode to work, and also achieving a better spinal surgery effect.

[0060] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A retractable scalpel for spine, characterized in that: The scalpel comprises a knife head (100), a knife rod (2) and a handle (4) connected thereto, the scalpel further comprising a switch (6) disposed in the inner cavity of the handle (4), and the knife head (100) comprises 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 provided between the primary electrode (110) and the secondary electrode (120), and the end thereof is connected to the switch (6) and the wire (5) in sequence through the stainless steel needle core (7) to obtain power, and the stainless steel needle core (7) is located outside the knife rod (2) and is in close contact with 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 outside the insulating sleeve (111), and the end close to the stainless steel needle core (7) is sequentially sleeved with a stainless steel tube (121) and a second insulating layer (122); The tertiary electrode (130) is disposed outside the second insulating layer (122) and is fixedly connected to the handle (4) via the second stainless steel tube (131), and the outside 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 a stainless steel tube (121) disposed outside the insulating sleeve (111); 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 a slider (1) disposed on the handle (4) to drive the primary electrode (110) to extend and retract, thereby connecting the primary electrode and the secondary electrode, or connecting the primary electrode and the tertiary electrode to work.

2. The retractable scalpel according to claim 1, characterized in that: A fourth insulating layer (123) is provided on the outer side of the second insulating layer (122) and the portion between the secondary electrode (120) and the second stainless steel tube (131).

3. The retractable surgical knife 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 bent at an angle relative to the axial direction of the cutter rod (2).

4. The retractable surgical knife according to claim 3, characterized in that: The insulating sleeve (111) is made of ceramic material, and the fourth insulating layer (123) is made of polytetrafluoroethylene.

5. The retractable surgical knife according to claim 4, characterized in that: 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 a power source via an electric wire.

6. The retractable surgical knife according to claim 5, characterized in that: The primary electrode (110) and the secondary electrode (120) are made of molybdenum metal.

7. The retractable surgical knife according to claim 1, characterized in that: The primary electrode (110) is connected to the stainless steel needle core (7) by welding, and the secondary electrode (120) is connected to the stainless steel pipe 1 (121) by welding.

8. A retractable surgical knife head for spine, characterized in that: The blade head (100) comprises a primary electrode (110), a secondary electrode (120), and a tertiary electrode (130) which are arranged in sequence 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 thereof is connected to a switch (6) and an electric wire (5) in sequence through a stainless steel needle core (7) to obtain power, and the stainless steel needle core (7) is located outside the blade rod (2) and is in close contact with 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 outside the insulating sleeve (111), and the end close to the stainless steel needle core (7) is sequentially sleeved with a stainless steel tube (121) and a second insulating layer (122); The tertiary electrode (130) is disposed outside the second insulating layer (122) and is fixedly connected to the handle (4) via the second stainless steel tube (131), and the outside 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 a stainless steel tube (121) disposed outside the insulating sleeve (111); 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 a slider (1) disposed on the handle (4) to drive the primary electrode (110) to extend and retract, thereby connecting the primary electrode and the secondary electrode, or connecting the primary electrode and the tertiary electrode to work.

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