KR102607581B1 - Tissue removal apparatus - Google Patents

Abstract

The present invention includes a shaft provided with a tissue removal member on one longitudinal side; a hollow protective tube into which the shaft is rotatably inserted; and a handle part connected to the protective tube, wherein the tissue removal device includes: a coupling space formed inside the handle part to communicate with the outside, where the other longitudinal side of the shaft is disposed; A coupling part coupled to the other longitudinal side of the shaft while disposed in the coupling space and rotated by receiving power from a power source; and a guide portion provided on an inner wall of the handle portion dividing the coupling space and rotatably supporting the shaft.

Description

Tissue removal device {TISSUE REMOVAL APPARATUS}

The present invention relates to a tissue removal device, and more specifically, to a tissue removal device that is inserted into narrow or tubular spaces in the body, such as intervertebral holes, reproductive organs, eyes, etc., and is configured to easily remove tissue that puts pressure on nerves or causes disease. It is about a tissue removal device.

During various surgical procedures, it is often necessary to remove abnormal tissue or bone within the body. For example, when performing surgery for foraminal stenosis, prostatic hyperplasia, adenomyosis, etc., not only soft tissues but also hard tissues within the body are removed.

A tissue removal device used to remove the above tissue includes a shaft provided at the tip of a removal member that is in direct contact with the tissue to be removed; a sheath protecting the shaft; It may be configured to largely include a handle connected to the sheath and the shaft and connected to a power unit for rotating the shaft.

The tissue removal device configured as described above has a shaft in which the shaft is rotated by power transmitted from the power unit, and a removal member provided at the tip of the shaft is in rotational contact with the tissue to be removed.

However, existing tissue removal devices have the problem of unintentionally interfering with normal nerves or tissues when removing tissue that compresses nerves or causes disease in a narrow space within the body. This is because the vibration generated during the rotation of the shaft occurs at the point where the shaft and the power unit are connected to each other. Since this connection point is the handle held by the operator, normal nerves or tissues are unintentionally shaken due to vibration. There is a problem with interference.

Additionally, it is important that the shaft rotates without being biased to one side inside the sheath having a tubular shape. However, since the tip of the shaft rotates at high speed and comes into contact with tissue or bone, and external force is transmitted in a narrow space of the body by the operator's operation, there is a problem that it bends over time and comes into contact with the inner surface of the sheath. Accordingly, a method of inserting a shaft into a sheath with a large inner diameter has been proposed, but this method has the problem of making it difficult to insert a tissue removal device into a narrow space within the body due to the larger diameter sheath.

Accordingly, the present applicant proposed the present invention in order to solve the above problems, and related prior art documents include 'Diamond Drillbur and Surgical Bone Tissue Removal Device Equipped with the Same' in Korean Patent No. 10-2123501 'There is.

The present invention is intended to solve the above problems, and when scraping tissue or bone that compresses nerves or causes disease within the body, the shaft can be rotated with a stable posture and the tissue can be removed. The purpose is to provide a tissue removal device that can prevent nerves, normal tissues, or bones from being damaged during the process.

The present invention includes a shaft provided with a tissue removal member on one longitudinal side; a hollow protective tube into which the shaft is rotatably inserted; A tissue removal device comprising a handle portion connected to the protective tube, wherein the tissue removal device includes: a coupling space formed inside the handle portion to communicate with the outside, and in which the other longitudinal side of the shaft is disposed; A coupling part coupled to the other longitudinal side of the shaft while disposed in the coupling space and rotated by receiving power from a power source; and a guide portion provided in the coupling space of the coupling portion to rotatably support the shaft.

Additionally, the coupling portion includes a first connector connected to the other longitudinal side of the shaft; and a hollow second connector connected to the first connector and the shaft while accommodating the first connector and the other longitudinal portion of the shaft.

In addition, the coupling part further includes a coupling pin, and the coupling pin is sequentially connected to a long hole formed in the second connector, a pin hole formed in the other longitudinal part of the first connector, and the other longitudinal part of the shaft. It may be inserted to couple the shaft, the first connector, and the second connector to each other.

In addition, one longitudinal end of the first connector is rotatably connected to the guide unit, and the pinhole formed on the other longitudinal side of the first connector is formed when the shaft is inserted into the internal space of the first connector. , It may correspond to a pinhole formed on the other side of the shaft in the longitudinal direction.

In addition, a fixing member having an outer diameter larger than the inner diameter of the second connector is provided on one side of the first connector in the longitudinal direction, and the fixing member has a long hole formed in the second connector and the first connector. And when sequentially inserted into the pinholes respectively formed in the shaft, they may be spaced apart from the guide part by a predetermined distance, and may also be spaced apart from a longitudinal end of the second connector by a predetermined distance.

Additionally, a buffer member may be provided between the fixing member and one longitudinal end of the second connector.

In addition, the handle portion includes a through hole formed in communication with the coupling space, and the through hole is connected to the other longitudinal end of the shaft disposed in the coupling space, the first connector, and the second The connector may be formed in a location where the connector can be visually confirmed from the outside.

Additionally, it may include a cover portion provided on one end of the protective tube in the longitudinal direction to cover a portion of the tissue removal member.

In addition, it further includes an airtight member provided at a connection portion of the protective tube and the handle, wherein the airtight member is seated on a step formed on one longitudinal side of the handle and can block the other longitudinal part of the protective tube. there is.

The tissue removal device according to the present invention stably supports a shaft that rotates at high speed to remove tissue, allowing the operator to efficiently remove only the tissue to be removed.

In addition, in the tissue removal device according to the present invention, a guide part and an airtight member are provided in the handle part to guide the rotational movement of the shaft, so that the shaft can rotate stably without being biased to one side in the inner center of the protective tube. Let it happen.

In addition, the tissue removal device according to the present invention provides a configuration that offsets the pressing force or load transmitted to the handle portion in the process of mounting the handpiece equipment to the second connector of the coupling portion with a buffer member, so that the shaft, the first connector, and It is possible to prevent the second connector from being damaged by external force.

1 is a cross-sectional view showing the configuration of a tissue removal device according to an embodiment of the present invention.
Figure 2 is an exploded cross-sectional view showing the configuration of a coupling portion according to an embodiment of the present invention.
Figure 3 is an enlarged view of area A shown in Figure 1.
Figure 4 is a view showing the distal end of a protective tube having a bent shape.
Figure 5 is a side view showing a state in which the cover is mounted on the tip of the protection tube.
Figure 6 is a diagram showing the second connector being moved according to an embodiment of the present invention.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms, but the present embodiments only serve to ensure that the disclosure of the present invention is complete and are within the scope of common knowledge in the technical field to which the present invention pertains. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims.

Hereinafter, a tissue removal device according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order to make the gist of the invention unambiguous.

Figure 1 is a cross-sectional view showing the configuration of a tissue removal device according to an embodiment of the present invention, Figure 2 is an separated cross-sectional view showing the configuration of a coupling portion according to an embodiment of the present invention, and Figure 3 is A shown in Figure 1. It is an enlarged view of the area, Figure 4 is a view showing the tip of the protective tube having a bent shape, Figure 5 is a side view showing a state in which a cover is mounted on the tip of the protective tube, and Figure 6 is a diagram according to an embodiment of the present invention. This is a diagram showing the second connector being moved.

As shown in Figures 1 and 2, the tissue removal device 100 according to an embodiment of the present invention includes a shaft 110 provided with a tissue removal member 111 on one longitudinal side; a hollow protective tube 120 into which the shaft 110 is rotatably inserted; and a handle portion 130 connected to the protective tube 120.

The shaft 110 can be said to be a component that receives power from a power source (not shown) and rotates inside the protection tube 120.

As shown in FIG. 1, the shaft 110 may be configured to include a wire cable (WC). The wire cable WC may have a bent shape on one side of the shaft 110 in the longitudinal direction. That is, as shown in Figure 4, it can be bent into a shape corresponding to the shape of the tip of the protection tube 120.

Meanwhile, the tissue removal member 111 may be provided on one side of the wire cable WC in the longitudinal direction. The tissue removal member 111 can be said to be a cutting tip on which diamond powder for cutting is distributed, and can be said to be a component that comes into direct contact with the tissue or bone to be removed. This tissue removal member 111 may be provided to be exposed to the outside at one end in the longitudinal direction of the protective tube 120.

Additionally, the other longitudinal end of the shaft 110 is rotatably disposed inside the handle portion 130, which will be described later.

The protective tube 120 can be considered a component for protecting the shaft 110 and the wire cable (WC). The protection tube 120 has an inner diameter larger than the outer diameter of the shaft 110 or the wire cable WC. In addition, one longitudinal end of the protection tube 120 is open so that the tissue removal member 111 can be exposed to the outside, and the other longitudinal end is fixedly connected to the longitudinal end of the handle portion 130, which will be described later. .

Meanwhile, as shown in FIG. 1, when the tissue removal member 111 is rotated, the tip of the protective tube 120 guides the rotational movement of the tissue removal member 111 and external foreign substances are removed from the protective tube 120. ) A hollow support member 112 may be provided to prevent it from flowing into the interior.

The support member 112 allows the tissue removal member 111, the wire cable (WC), and the shaft 110 to rotate with a concentric axis. In particular, when the wire cable (WC) or shaft 110 rotating inside the protection tube 120 rubs against the inner surface of the protection tube 120, metal wear powder is generated, and this metal powder is attached to the tip of the protection tube 120. It also plays a role in blocking it from escaping into the body.

The support member 112 as described above cooperates with the guide portion 300 and the O-ring 400, which will be described later, to reduce vibration, vibration, noise, and heat generation that occurs when the shaft 110 rotates at high speed. Do it.

The handle portion 130 is a component held by the operator and can be combined with a power source handpiece equipment.

Inside the handle portion 130, a coupling space S may be provided that can communicate with the outside in order to be coupled to the handpiece of the power source, and in which the other longitudinal end of the shaft is rotatably disposed.

The coupling space (S) may be formed on the other side of the handle portion 130 in the longitudinal direction while having a cylindrical shape.

On the other hand, the tissue removal device 100 according to an embodiment of the present invention is coupled to the other longitudinal side of the shaft 110 while disposed in the coupling space (S), and rotates by receiving power from a power source. It may include a guide portion 300 provided in the coupling space (S) of the handle portion 130 that partitions the coupling portion 200 and the coupling space (S) to rotatably support the shaft 110. there is.

First, the coupling portion 200 includes a first connector 210 connected to the other longitudinal side of the shaft 110, as shown in FIGS. 1 and 2; and a hollow second connector 220 connected to the first connector 210 and the shaft 110 while receiving the other longitudinal portion of the first connector 210 and the shaft 110. can do.

The first connector 210 may be considered a component disposed in the coupling space S formed in the handle portion 130, and may have a diameter larger than the diameter of the shaft 110. For reference, the first connector 210 may have a hollow tube shape into which the other longitudinal end of the shaft 110 can be inserted.

Additionally, the first connector 210 may have a length shorter than the length of the coupling space (S) and be fixedly connected to the other longitudinal end of the shaft 110 exposed to the coupling space (S).

One longitudinal end of the first connector 210 may be rotatably connected to the guide portion 300. Also, the other longitudinal end of the first connector 210 may be inserted into the internal space of the second connector 220.

The second connector 220 is similarly disposed in the coupling space S formed in the handle portion 130, and can be said to be a component that is substantially connected to the handpiece equipment of the power source.

The second connector 220 has a hollow tube shape with both one end and the other end in the longitudinal direction open, and may have an inner diameter larger than the outer diameter of the first connector 210. Due to this structure, the first connector 210 connected to the other longitudinal end of the shaft 110 can be inserted into one longitudinal end of the second connector 220.

The coupling portions 200 configured as above can be pin-connected to each other by the coupling pin 230. That is, the coupling pin 230 is formed in the long hole 221 formed in the second connector 220, the other longitudinal side of the first connector 210, and the pin hole 211 formed in the other longitudinal side of the shaft 110. , 112) to connect the shaft 110, the first connector 210, and the second connector 220 to each other.

For reference, the pinhole 211 formed on the other longitudinal side of the first connector 210 is formed when the other longitudinal side of the shaft 110 is inserted into the internal space of the first connector 210. It corresponds to the pinhole 112 formed on the other longitudinal side of the shaft 110.

Meanwhile, the long hole 221 formed in the second connector 220 allows the second connector 220 to move within the coupling space (S). That is, in order to be coupled to the power source handpiece equipment, the second connector 220 has its longitudinal other end exposed in the coupling space S of the handle portion 130, as shown in Figure 6 (a). It can be moved as needed. At this time, the coupling pin 230 is located on one side of the long hole 221 in the longitudinal direction.

On the contrary, after the second connector 220 is combined with the handpiece equipment, as shown in (b) of FIG. 6, the entire lengthwise portion will be accommodated in the coupling space (S) of the handle portion 130. It can be moved so that it can be moved. At this time, the coupling pin 230 is located on the other side of the long hole 221 in the longitudinal direction.

As above, since the second connector 220 needs to be linearly reciprocated within the coupling space (S), the hole into which the coupling pin 230 is inserted is a slit-shaped long hole 221 as shown in the drawing. It is desirable to form it as

Meanwhile, a fixing member 212 having an outer diameter larger than the inner diameter of the second connector 220 is provided on one longitudinal side of the first connector 210.

The fixing member 212 has a size that cannot be inserted into the internal space of the second connector 220, and connects the other longitudinal end of the shaft 110, the first connector 210, and the second connector ( When the pins 230) are pin-coupled to each other, they may be arranged to be spaced apart from the guide part 300 by a predetermined distance, and may also be arranged to be spaced apart from one end in the longitudinal direction of the second connector 220 at a predetermined distance.

That is, the fixing member 212 is connected to the long hole 221 where the coupling pin 230 is formed in the second connector 220, the other longitudinal portion of the first connector 210, and the shaft 110. When sequentially inserted into the pinholes 211 and 112 formed on the other side of the longitudinal direction, it is arranged to be spaced apart from the guide portion 300 by a predetermined distance, and is also connected to one end of the second connector 220 in the longitudinal direction by a predetermined distance. It can be arranged to be spaced apart.

Additionally, a buffer member 240 may be provided between the fixing member 212 and one longitudinal end of the second connector 220.

The buffer member 240 is provided on the outer surface of the first connector 210, one longitudinal end of which is in contact with the fixing member 212, and the other longitudinal end of which is in contact with the longitudinal direction of the second connector 220. You can come into contact with one group.

The buffer member 240 serves to relieve the pressing force or shock transmitted to the second connector 220 during the process of combining the second connector 220 with the handpiece equipment, and can be implemented as an elastic spring. .

As shown in (a) of FIG. 6, the buffer member 240 elastically presses one end in the longitudinal direction of the second connector 220 so that the other end in the longitudinal direction of the second connector 220 enters the coupling space. (S) so that it can be exposed to the outside.

On the contrary, the buffer member 240 presses the other longitudinal end of the second connector 220, and when the second connector 220 is moved to the coupling space S of the handle portion 130, (Figure 6) As shown in b), one longitudinal end of the second connector 220 is pressed and compressed.

The pressure or impact generated in the process of coupling the second connector 220 with the handpiece equipment can be offset by the buffer member 240 having the above configuration. Accordingly, the other longitudinal end of the shaft 110, the first connector 210, and the guide portion 300, which will be described later, can be prevented from being deformed or damaged by external force.

As shown in FIGS. 1 and 6, the guide portion 300 is disposed on one side of the coupling space S in the longitudinal direction, and can rotatably support the shaft 110, as described above.

The guide unit 300 forms a hole through which the shaft 110 can pass, and may be implemented as a polymer bearing or a metal bearing. For example, the guide portion 300 may be made of Teflon material, or it may be made of a thermoplastic material such as ULTEM (Poly Ether lmid), which has excellent strength, hardness, and heat resistance.

For reference, if the guide part 300 is implemented as a metal bearing, it has the advantage in that it can be used permanently and provides durability suitable for high-speed rotation. However, the tissue removal device 100 according to an embodiment of the present invention is used for about 5 to 10 minutes while maintaining a rotation speed of 25,000 to 30,000 rpm during actual surgery. Additionally, from a hygienic standpoint, it is recommended that the tissue removal device 100 be discarded after one use, but if it is disinfected and reused, it can only be used about 3 to 6 times.

Considering the above, it is preferable that the guide unit 300 be implemented as a plastic bearing rather than as an expensive metal bearing that is used permanently. Therefore, it is preferable that the guide portion 300 is made of Teflon or Ultem material.

Meanwhile, as described above, in the guide portion 300, the fixing members 212 formed at one end in the longitudinal direction of the first connector 210 are arranged to be spaced apart from each other to form a non-contact state. That is, a predetermined gap is formed between the guide part 300 and the fixing member 212. If the guide part 300 and the fixing member 212 are in contact with each other, the first connector 210 is also rotated in conjunction with the rotation of the shaft 110, so the guide part 300 is connected to the fixing member ( It interferes with the rotation of 212 and reduces the rotational force 110 of the shaft 110. In addition, the guide part 300 is easily worn out by the rotational force of the fixing member 212.

Therefore, it is preferable that the fixing member 212 formed on one side of the guide portion 300 and the first connector 210 in the longitudinal direction is provided in the coupling space S while being spaced apart by a predetermined distance.

Meanwhile, a through hole 131 may be formed in the handle portion 130 to communicate with the coupling space (S).

The through hole 131 allows the other longitudinal end of the first shaft 110 and the first connector 210 and the second connector 220 disposed in the coupling space (S) to be visually confirmed from the outside. . To be precise, the insertion position of the coupling pin 230 can be visually confirmed from the outside.

Therefore, the operator can insert the coupling pin 230 through the through hole 131, and in particular, the long hole 221 of the second connector 220 and the pin hole 211 of the first connector 210. And the state of the coupling pins 230 sequentially inserted into the pinholes 112 formed at the other longitudinal end of the shaft 110 can be checked at any time. When the shaft 110 is rotated by the force transmitted from the power source, the coupling pin 230 may flow on the pinholes 211 and 112 and the long hole 221 and gradually separate. Accordingly, the operator can easily check the state of the coupling pin 230 disposed inside the coupling space (S) through the through hole 131 and quickly take action accordingly.

In addition, the tissue removal device 100 according to an embodiment of the present invention, as shown in Figures 1 and 3, has an airtight member ( 400) is desirable.

The airtight member 400 blocks reflux of physiological saline solution, drugs, or body fluids injected into the body with the tissue removal device 100 and flows into the coupling space (S) of the handle portion 130. It plays a role.

The airtight member 400 may be seated on a step formed on the other longitudinal end of the protective tube 120 and one longitudinal side of the handle portion 130, while forming a hole through which the shaft 110 can pass. In other words, the airtight member 400 can be seated on the stepped portion of the handle portion 130 while having an annular shape.

At this time, the airtight member 400 may be seated on the step in a structure that does not interfere with the rotation of the shaft 110. Alternatively, the airtight member 400 may be seated on the step while being configured to rotatably support the shaft 110. It could be.

If the airtight member 400 is provided in a non-contact state with the shaft 110 so as not to interfere with the rotation of the shaft 110, physiological saline solution, drugs, or body fluids may enter the gap formed between the shaft 110 and the airtight member 400. It may leak. Therefore, it is preferable that the airtight member 400 and the shaft 110 are rotatably supported and seated on a step formed on one side of the handle portion 130 in the longitudinal direction. At this time, the airtight member 400 may be made of a silicone O-ring.

The airtight member 400 configured as above suppresses the tremor and vibration of the handle portion 130 due to rotation of the shaft 110 when the shaft 110 rotates at high speed, and furthermore, the handle portion 130 It also plays a role in minimizing the noise generated.

In the tissue removal device 100 according to an embodiment of the present invention, the support member 112, the guide portion 300, and the airtight member 400 cooperate with each other to remove the shaft 110, the tissue removal member 111, and the wire. Since the cable (WC) can rotate on the same axis, vibration or noise generated in the handle portion 130 from the rotational force of the motor provided by the handpiece equipment can be reduced. Therefore, the operator can perform the procedure simply and quickly.

In addition, the tissue removal device 100 according to an embodiment of the present invention may include a cover portion 500 provided on one end in the longitudinal direction of the protective tube 120 to cover a portion of the tissue removal member 111. there is.

The cover part 500 may be detachably provided at the distal end of the protection tube 120. For example, the cover portion 500 may be configured to include a coupling protrusion that is inserted and coupled to the coupling groove or coupling hole formed at the distal end of the protective tube 120 in an interference fit manner. As described above, the tissue removal member ( 111) can be manufactured in the form of a roof with a semicircular cross-section to cover some parts of the roof.

The cover portion 500 serves to protect parts that should not be cut during surgery. For example, when tissue or bone adjacent to nerve tissue needs to be removed, the nerve tissue is covered to block the tissue removal member 111 from contacting the nerve tissue. In reality, nerves and blood vessels are intricately intertwined in the space between vertebrae, so if there is no cover part 500, nerve damage or blood vessels may burst during surgery.

In addition, it is desirable that the cover portion 500 does not obstruct the operator's field of view so that the operator can easily remove the tissue to be removed by visually checking the tissue removal member 111. Therefore, the cover portion 500 may be made of a transparent material.

Although specific embodiments according to the present invention have been described so far, it goes without saying that various modifications are possible without departing from the scope of the present invention.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the patent claims described below as well as equivalents to the claims of this patent.

100: tissue removal device 110: shaft
111: tissue removal member 112: support member
120: protection tube 130: handle part
131: through hole 200: coupling part
210: first connector 220: second connector
230: Coupling pin 240: Buffer member
300: Guide part 400: Airtight member
500: Cover part

Claims (9)

A shaft provided with a tissue removal member on one longitudinal side;
a hollow protective tube into which the shaft is rotatably inserted;
A tissue removal device comprising a handle connected to the protective tube,
The tissue removal device,
a coupling space formed inside the handle to communicate with the outside, where the other longitudinal side of the shaft is disposed;
A coupling part coupled to the other longitudinal side of the shaft while disposed in the coupling space and rotated by receiving power from a power source; and
It includes a guide part provided in the coupling space of the coupling part to rotatably support the shaft,
The coupling part,
a first connector connected to the other longitudinal side of the shaft;
a second hollow connector connected to the first connector and the shaft while accommodating the first connector and the other longitudinal side portion of the shaft; and
It is sequentially inserted into the long hole formed in the second connector, the other longitudinal side of the first connector, and the pinhole formed in the other longitudinal side of the shaft to couple the shaft, the first connector, and the second connector to each other. A tissue removal device comprising a coupling pin.
delete delete According to claim 1,
One longitudinal end of the first connector is rotatably connected to the guide part,
The pinhole formed on the other longitudinal side of the first connector corresponds to the pinhole formed on the other longitudinal side of the shaft when the shaft is inserted into the internal space of the first connector. .
According to claim 4,
A fixing member having an outer diameter larger than the inner diameter of the second connector is provided on one longitudinal side of the first connector,
The fixing member is spaced apart from the guide portion at a predetermined distance when the coupling pin is sequentially inserted into the long hole formed in the second connector and the pin hole formed in each of the first connector and the shaft, and further, the second connector A tissue removal device characterized in that it is spaced a predetermined distance from one end of the longitudinal direction.
According to claim 5,
A tissue removal device, characterized in that a buffer member is provided between the fixing member and the longitudinal end of the second connector.
According to claim 1,
A through hole is formed in the handle portion to communicate with the coupling space,
The tissue removal device, characterized in that the through hole is formed at a position where the other longitudinal end of the shaft disposed in the coupling space and the first connector and the second connector can be visually confirmed from the outside.
According to claim 1,
A tissue removal device comprising a cover portion provided on one end of the protective tube in the longitudinal direction and covering a portion of the tissue removal member.
According to claim 1,
It further includes an airtight member provided at a connection portion of the protection tube and the handle,
The airtight member is,
A tissue removal device characterized in that it is seated on a step formed on one longitudinal side of the handle and blocks the other longitudinal portion of the protective tube.

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