Removal module of tissue removal device

Abstract

The catheter includes a bending section connected to the tip of the catheter and bent from the tip of the catheter by user operation while maintaining a predetermined curvature, and a tissue removal section that is exposed on the bending section together with the shaft, which moves back and forth by user operation when the bending section is bent.The tissue removal section is characterized in that when it is exposed to the outside from the tip of the trocar and then inserted into the inside of the trocar, it remains deformed so as not to get caught on the tip side of the trocar.

Description

[Technical Field]

[0001] The present invention relates to a removal module of a tissue removal device that is adapted to be inserted into small or tubular spaces within the body to facilitate the removal of tissue that may be compressing nerves or causing disease. [Background technology]

[0002] During various surgical procedures, it is often necessary to remove abnormal tissues and bones that have developed within the body. For example, to treat diseases such as spinal stenosis, benign prostatic hyperplasia, and adenomyosis, surgery is required to remove not only soft tissues but also hard tissues within the body.

[0003] Various surgical procedures, such as balloon dilation, spinal fusion, neuroplasty, and foraminotomy, are used to treat these diseases.

[0004] For example, balloon dilation is a procedure in which a balloon is placed in the narrowed neuromuscular passage using a catheter and then inflated to widen the passage through which the neuromuscular tissue passes, thereby releasing adhesions and relieving direct pressure on the nerves. While this procedure has the advantages of being simple and allowing for a quick recovery, it has limitations in that it is difficult to treat the adhesions at the site of adhesions, and the recurrence rate is high, so it is mainly performed on patients with minor cases.

[0005] Spinal fusion is a surgical procedure that stabilizes the movement of two vertebrae to maintain a certain distance between them. This procedure generally requires a large incision, and even in minimally invasive cases, it has the disadvantage of taking longer than other recent minimally invasive procedures. Furthermore, because an implant is inserted to stabilize the spinal bodies, the patient's mobility is reduced due to the fusion of the spinal bodies, and instability of adjacent segments increases over the long term. This requires a lot of money and long-term recovery, which creates a significant economic and physical burden.

[0006] Neuroplasty is a surgical procedure in which a soft catheter is inserted along the spinal canal, which is formed through the spine, and medication is injected into the lesion that causes pain. This procedure has the advantage of being minimally invasive and allowing for quick recovery, but it does not provide a fundamental solution to the structural problem that causes stenosis, and it is difficult to perform physical treatment, so it has the disadvantage of not being very effective in improving symptoms.

[0007] Foraminotomy is a surgical procedure that uses a surgical tool with a hard penetration tube to remove biological tissue that has narrowed the intervertebral foramen, thereby securing the nerve passage through the intervertebral foramen. While this procedure has the advantage of allowing the surgical site to be visually confirmed using an endoscope, it is limited in its ability to remove all tissue inside and outside the three-dimensional intervertebral foramen, and is unable to fully remove all tissue compressing the nerves. Furthermore, because the surgical tool and endoscope must reach the affected tissue together, they must be inserted from two or more directions, or the diameter of the instruments is relatively large, complicating the surgery and increasing the recovery period, resulting in increased inconvenience for the patient.

[0008] In addition, the above surgeries tend to be performed using minimally invasive surgical methods that minimize skin / muscle incisions and minimize surgical scars and incision marks.

[0009] Therefore, the present applicant has developed a tissue removal device that is compatible with minimally invasive surgery and can effectively remove disease-causing tissues at various locations. Such a tissue removal device is specifically disclosed in Korean Patent Registration No. 10-2300220, which was filed and registered by the present applicant.

[0010] The tissue removal device can be used, for example, to directly remove diseased tissue at the site of foraminal stenosis.

[0011] Additionally, the tip of the tissue removal device can be bent toward the diseased tissue inside the body to allow easier penetration into the diseased tissue.

[0012] In more detail, as shown in FIG. 13, the distal end of the tissue removal device inserted into the body can be configured to include a plurality of bending blocks 20 and a plurality of blades 30 that are exposed to the outside in the internal space formed by the bending blocks 20 when the bending blocks 20 are bent at a predetermined angle to remove diseased tissue.

[0013] Here, when the wire W is pulled by a user's operation, the bending blocks 20 can be bent at a predetermined angle as shown in Fig. 13. At this time, the blades 30 can be exposed to the outside in the inner space formed by the bending blocks 20 together with the shaft 40 that can be moved back and forth by a user's operation.

[0014] In the above-described state, when the user operates the handle of the tissue removal device to move the shaft 40 back and forth, the blades 30 provided at predetermined intervals on the shaft 40 can scrape out the diseased tissue.

[0015] However, since the tissue removal device 10 is composed of multiple bending blocks 20 whose distal ends are connected and aligned by wires, there is a problem that if the wires break due to excessive tension, the bending blocks 20 remain inside the body.

[0016] The tissue removal device 10 is inserted into the patient's body with the tip and catheter 50 passing through a metal trocar that has been previously inserted into the patient's lesion.

[0017] That is, the tissue removal device 10 is configured to be guided by a hollow trocar that has been previously inserted into the patient's body, and to reach the lesion site safely and accurately.

[0018] At this time, the distal end of the tissue removal device 10 is bent toward the diseased tissue while being exposed outside the end of the trocar inserted into the body, and then the diseased tissue can be removed.

[0019] However, once the diseased tissue has been removed, the tip of the tissue removal device 10 and the catheter 50 inserted into the trocar must be pulled out from the interior space of the trocar, and during this process, there is a problem that the blade 30 comes into contact with and gets caught on the end of the trocar inserted inside the body.

[0020] In other words, since the tip of the tissue removal device 10 is bent toward the tissue to be removed after passing through the trocar, when the user pulls the handle of the tissue removal device 10 to remove the catheter 50 and the bending blocks 20 from inside the trocar, the angle of the bent bending blocks 20 and the position of the blade 30 cause the blade 30 to get caught on the end of the trocar and prevent it from being inserted into the interior space of the trocar.

[0021] In particular, since the blades 30 are configured to be arranged in large numbers at predetermined intervals along the longitudinal direction of the shaft 40, even if one of the blades 30 does not get caught on the end of the trocar and is immediately inserted into the internal space of the trocar, there is a problem that another blade 30 will come into contact with the end of the trocar and get caught.

[0022] Therefore, the user must repeatedly move the handle of the tissue removal device back and forth, a tedious process, until the multiple blades 30, exposed outside the end of the trocar and positioned inside the patient's body, are inserted into the interior space of the trocar.

[0023] During this process, the blade 30 repeatedly comes into contact with the end of the trocar, which can cause damage and deformation of the blade 30, and can even cause the blade 30 to detach from the shaft 40 and remain inside the patient's body.

[0024] Therefore, the present applicant has proposed the present invention to solve the above problems. Related prior art documents include Patent Document 1: Korean Patent Registration No. 10-2300220 "Tissue Removal Device." [Prior art documents] [Patent documents]

[0025] [Patent Document 1] Republic of Korea Patent No. 10-2300220 Summary of the Invention [Problem to be solved by the invention]

[0026] The present invention has been made to solve the above-mentioned problems, and aims to provide a removal module for a tissue removal device that allows the tip of the tissue removal device, which is bent at a predetermined angle inside the patient's body, to be easily inserted into the inner space of the trocar without interfering with the end of the trocar.

[0027] In addition, the present invention aims to solve the above-mentioned problems by providing a removal module for a tissue removal device that is configured so that even if the blade of the tissue removal device comes into contact with and gets caught on the end of a trocar, the user can quickly eliminate the phenomenon of the blade getting caught on the end of the trocar.

[0028] Another object of the present invention is to provide a removal module for a tissue removal device that prevents surgical tool residue from being left inside the patient's body during the process of removing diseased tissue. [Means for solving the problem]

[0029] The present invention comprises a bending section connected to the tip of a catheter and bent from the tip of the catheter by user operation while maintaining a predetermined curvature, and a tissue removal section that is exposed on the bending section together with a shaft that moves back and forth by user operation when the bending section is bent, and when the tissue removal section is exposed to the outside from the tip of a trocar and then inserted into the inside of the trocar, it can be inserted into the inside of the trocar while remaining deformed so as not to get caught on the tip side of the trocar.

[0030] The bending portion may include an insertion member that is inserted into a hole formed at the tip of the catheter, and a bending member that is integrally connected to the insertion member and bent at a predetermined curvature.

[0031] The bending portion may include a mounting groove formed along the longitudinal direction of the bending member, into which a shaft passing through the distal end of the catheter is mounted. The tissue removal portion may include a housing member connected to a portion of the outer surface of the shaft while the shaft is housed therein, a blade connected to the housing member and coming into contact with the tissue to be removed, and an anti-snag member provided at the longitudinal end of the housing member and inserted inside the trocar before the blade.

[0032] In addition, the end of the anti-snap member may have a downwardly inclined shape.

[0033] In addition, the end of the anti-catching member may come into contact with the tip surface of the trocar or with a pressing member formed to protrude from the tip side of the trocar toward the inside of the trocar.

[0034] In addition, the blade may be inserted into the inside of the trocar through an incision groove formed by incising the distal end of the trocar. [Effects of the Invention]

[0035] The removal module of the tissue removal device according to one embodiment of the present invention allows the bending member, which is bent at a predetermined angle inside the patient's body, and the shaft and tissue removal portion exposed to the outside from the bending member to be easily inserted into the inner space of the trocar through a hole formed at the tip of the trocar.

[0036] In addition, the removal module of the tissue removal device according to one embodiment of the present invention allows the user to quickly resolve the blade getting stuck on the tip of the trocar even if the blade comes into contact with the tip of the trocar.

[0037] In addition, the removal module of the tissue removal device according to one embodiment of the present invention can prevent damage to the blade or bending member that cuts the tissue during the process of removing the tissue that causes the lesion, thereby preventing the phenomenon of surgical tools remaining inside the patient's body. [Brief explanation of the drawings]

[0038] [Figure 1] 1 is a perspective view of a removal module according to one embodiment of the present invention mounted at the distal end of a tissue removal device. FIG. [Figure 2] 1 is a perspective view of a removal module according to one embodiment of the present invention; [Figure 3] FIG. 2 is a side view of a removal module according to one embodiment of the present invention. [Figure 4] FIG. 2 is a perspective view of a bending portion according to an embodiment of the present invention. [Figure 5] FIG. 2 is a side view of a bending portion according to an embodiment of the present invention. [Figure 6] FIG. 2 is a perspective view of a bending portion according to an embodiment of the present invention, as viewed from the rear. [Figure 7] 1 is a perspective view of a tissue removal portion according to an embodiment of the present invention. [Figure 8] FIG. 10 is a side view of a tissue removal portion according to one embodiment of the present invention. [Figure 9]FIG. 1 is a rear perspective view of a tissue removal portion according to an embodiment of the present invention. [Figure 10] 6 is a side view showing a state in which the bending portion shown in FIG. 5 is bent at a predetermined curvature by a user's operation. FIG. [Figure 11] FIG. 1 is a perspective view of a trocar. [Figure 12] FIG. 1 is a perspective view showing the tip of a trocar. [Figure 13] FIG. 10 is a side view showing the configuration of a conventional removal module. DETAILED DESCRIPTION OF THE INVENTION

[0039] The advantages and features of the present invention and the methods for achieving them will become more apparent from the following detailed description of the embodiments taken in conjunction with the accompanying drawings.

[0040] However, the present invention is not limited to the embodiments disclosed below, and may be realized in various different forms. However, the present embodiments are provided so that the disclosure of the present invention will be complete and will fully convey the scope of the invention to those skilled in the art to which the present invention pertains. The present invention is defined only by the scope of the claims.

[0041] A removal module of a tissue removal device according to one embodiment of the present invention will be described in detail below with reference to Figures 1 to 13. In describing the present invention, detailed descriptions of related known functions or configurations will be omitted so as not to obscure the gist of the invention.

[0042] FIG. 1 is a perspective view showing a removal module according to one embodiment of the present invention provided at the tip of a tissue removal device; FIG. 2 is a perspective view of a removal module according to one embodiment of the present invention; FIG. 3 is a side view of a removal module according to one embodiment of the present invention; FIG. 4 is a perspective view of a bending section according to one embodiment of the present invention; FIG. 5 is a side view of a bending section according to one embodiment of the present invention; FIG. 6 is a perspective view of the bending section according to one embodiment of the present invention viewed from the rear; FIG. 7 is a perspective view of a tissue removal section according to one embodiment of the present invention; FIG. 8 is a side view of a tissue removal section according to one embodiment of the present invention; FIG. 9 is a perspective view of the tissue removal section according to one embodiment of the present invention viewed from the rear; FIG. 10 is a side view showing the bending section shown in FIG. 5 bent to a predetermined curvature by user operation; FIG. 11 is a perspective view of a trocar; FIG. 12 is a perspective view of the tip of the trocar; and FIG. 13 is a side view showing the configuration of a conventional removal module.

[0043] 1, a removal module 100 according to one embodiment of the present invention can be provided at the distal end of a tissue removal device 10. That is, the removal module 100 can be provided at the distal end of a catheter 50 constituting the tissue removal device 10, and inserted into the body to remove lesion-inducing tissue.

[0044] 2 and 3 show the removal module 100 in more detail.

[0045] As shown in Figures 2 and 3, the removal module 100 may include a bending portion 200 that is connected to the tip of the catheter 50 and can be bent from the tip of the catheter 50 with a predetermined curvature by user operation, and a tissue removal portion 300 that is attached to a shaft 40 arranged in an attachment groove of the bending portion 200 and is exposed on the bending portion 200 together with the shaft 40 when the bending portion 200 is bent.

[0046] As shown in Figures 4 to 6, the bending portion 200 includes an insertion member 210 that is inserted into a hole formed at the tip of the catheter 50, a bending member 220 that is integrally connected to the insertion member 210 and bent at a predetermined curvature, and an attachment groove 230 that is formed along the longitudinal direction of the bending member 220 and into which the shaft 40 that has passed through the tip of the catheter 50 is attached.

[0047] The insert 210 may have a generally cylindrical shape.

[0048] 6, a pair of "U"-shaped grooves may be formed on the upper surface of the inserting member 210, through which a wire W that exerts tension to bend the bending member 200 passes.

[0049] The insertion member 210 may be formed with a first hole 210a through which a tube N (see FIG. 3) is inserted and passes, and a second hole 210b through which the shaft 40 is inserted and passes. For reference, the tube N may be used for irrigation or drug delivery.

[0050] In addition, a rotation prevention member 240 may be formed on the circumferential surface of the insert member 210 .

[0051] When the insertion member 210 is inserted into a hole formed at the tip of the catheter 50, the anti-rotation member 240 is inserted into a play prevention groove formed at the tip of the catheter 50 to prevent the insertion member 210 from rotating.

[0052] The bending member 220 has a predetermined length and is integrally connected to the insert member 210 as described above.

[0053] The tip of the bending member 220 may be formed with a hole 220a into which the tube N passing through the second hole 210b formed in the insertion member 210 can be inserted.

[0054] 2 and 3, a pair of holes may be formed at the distal end of the bending member 220, through which the wire W passing through the insertion member 210 can be inserted and passed. That is, the wire W passes through the pair of holes formed at the distal end of the bending member 220 in order, and then passes through the U-shaped groove formed on the upper surface of the insertion member 210, and moves to the inside of the handle of the tissue removal device 10.

[0055] Therefore, when the user operates the handle of the tissue removal device 10 and pulls the wire W, the bending member 220 can be bent at a predetermined curvature.

[0056] The mounting groove 230 formed in the bending member 220 can be said to be a space in which a tissue removal part 300 (described later) and a shaft 40 for linearly reciprocating the tissue removal part 300 are disposed.

[0057] The bending unit 200 configured as described above serves to guide the tissue removal unit 300 to the tissue causing pain at the lesion site inside the body, and in particular, allows the tissue removal unit 300 to move back and forth more stably in the tubular structure of the body or in narrow areas inside the body.

[0058] In other words, when the bending member 220 of the bending unit 200 is bent to a predetermined curvature inside the body, the bent bending member 220 acts as a support point, thereby increasing the adhesion between the tissue removal unit 300 (described later) and the tissue to be removed, and allowing the tissue removal unit 300 to move back and forth stably.

[0059] In addition, the bending portion 200 is preferably made of a material that can be bent to a predetermined curvature and then restored to a straight shape, i.e., a plastic or metal material that has excellent elastic restoring force or flexibility.

[0060] The tissue removal portion 300 is exposed to the outside from the tip of the trocar 400, and when inserted into a hole formed at the tip of the trocar 400, it can be pressed toward the tip of the trocar 400 and deformed so as not to get caught on the tip of the trocar 400.

[0061] As shown in Figures 7 to 9, the tissue removal portion 300 as described above may include: a housing member 310 that is disposed in the mounting groove 230 formed in the bending member 220 while housing a portion of the shaft 40 in the longitudinal direction and is joined to a portion of the outer circumferential surface of the shaft 40; a blade 320 that is connected to the housing member 310 and is exposed at the top of the mounting groove 230 and comes into contact with the tissue to be removed; and an anti-hook member 330 that is integrally connected to the housing member 310 at the longitudinal end of the housing member 310 and is inserted into the inner space of the trocar 400 before the blade 320.

[0062] The receiving member 310 may be connected to a portion of the outer circumferential surface of the shaft 40 using a known joining method. For example, the receiving member 310 may be connected to the shaft 40 by laser welding or by a known crimping method.

[0063] It is preferable that the shaft 40 is also made of a material that can be bent to a predetermined curvature and then restored to a straight shape, i.e., a plastic or metal material that has excellent elastic restoring force or flexibility.

[0064] The housing member 310 may be provided in pairs, and may have a bent shape having a curvature corresponding to a part of the outer circumferential surface of the shaft 40 .

[0065] The blade 320 is provided in a form that connects the pair of housing members 310 to each other, and is disposed so as not to come into contact with the shaft 40 joined to the housing members 310 .

[0066] At least one blade 320 may be provided on the receiving member 310. In one embodiment of the present invention, the drawings show that a pair of blades 320 are provided on the receiving member 310 at a predetermined interval from each other.

[0067] The blade 320 having the above-described configuration is a component that comes into direct contact with the tissue to be removed, and one end of the blade is honed to be sharp so that it can scrape or cut the tissue.

[0068] Also, as shown in FIG. 8, one end of the blade 320 may be bent upward at a predetermined angle to easily scrape or cut tissue.

[0069] Therefore, when the shaft 40 moves back and forth linearly by the user's operation, the housing member 310 joined to the shaft 40 also moves back and forth linearly, allowing the blade 320 to scrape out or cut off the tissue that causes the lesion.

[0070] The anti-snag member 330 serves to prevent the blade 320 from getting caught on the tip surface of the trocar 400 (see Figure 12) when the tissue removal portion 300 exposed to the outside from the tip of the trocar 400 is inserted into the inner space of the trocar 400.

[0071] In order to insert the bending portion 200 and tissue removal portion 300 exposed to the outside from the tip of the trocar 400 into the internal space of the trocar 400, the user pulls the catheter 50 using the handle of the tissue removal device 10, and the bending portion 200 and tissue removal portion 300 can be inserted into the hole formed at the tip of the trocar 400.

[0072] When the bending member 220 of the bending portion 200 is not bent at a predetermined curvature but maintains a straight state, it can be easily inserted into the inner space of the trocar 400 .

[0073] However, as shown in Fig. 10, when the bending member 220 is bent at a predetermined curvature, and the shaft 40 and tissue removal unit 300 are exposed to the outside from the mounting groove 230 of the bending member 220, it is difficult to insert the shaft 40 and tissue removal unit 300 into the inner space of the trocar 400. This is because, in the state shown in Fig. 10, the blade 320 of the tissue removal unit 300 comes into contact with and gets caught on the distal end surface 410 of the trocar 400.

[0074] Although the handle of the tissue removal device 10 can be manipulated to straighten the bending member 220, in tubular or narrow spaces such as blood vessels within the body, it is not only difficult to return the bending member 220 to its original state once it has been bent, but there is also the problem that normal tissue or nerves within the body may come into contact with the bending member 220 during the process of deforming it to its original state, causing injury.

[0075] Therefore, it is preferable to first insert the bending member 220 bent at a predetermined curvature and the tissue removal portion 300 exposed on the bending member 220 into the inner space of the trocar 400 through a hole formed at the tip of the trocar 400. That is, it is preferable to insert them into the hole formed at the tip of the trocar 400 in the state shown in FIG.

[0076] As described above, the anti-snag member 330 can be inserted into the hole formed on the distal end side of the trocar 400 before the blade 320 is inserted.

[0077] During this process, even if one end of the anti-snap member 330 comes into contact with the distal end surface 410 of the trocar 400, one end of the anti-snap member 330 has a downwardly inclined shape so that it can be easily inserted into the inner space of the trocar 400.

[0078] Therefore, even if one end of the inclined anti-catching member 330 contacts the distal end surface 410 of the trocar 400, it can be easily inserted into the inner space of the trocar 400.

[0079] At this time, when the end of the inclined anti-snap member 330 is pressed by an external force, the receiving member 310 integrally connected to the anti-snap member 330 is also pressed and deformed, and the blade integrally connected to the receiving member 310 is deformed, resulting in a decrease in the overall height.

[0080] Then, the blade 320 is deformed to a height that does not catch on the tip surface 410 of the trocar 400, and therefore the blade 320 can be easily inserted inside the trocar 400 without interfering with the tip surface 410.

[0081] Here, it is preferable that the anti-catching member 330 and the blade 320 have a shape that can be deformed when an external force is transmitted thereto.

[0082] For example, as shown in FIG. 9, the anti-catching member 330 and the blade 320 can be manufactured in a form that cooperates with the receiving member 310 to form a space through which the shaft 40 and the wire W can pass.

[0083] 12. Also, the end of the anti-snag member 330 having a beveled shape can come into contact with the tip surface 410 or the pressing member 420 of the trocar 400 shown in FIG.

[0084] Here, the pressing member 420 may be formed to protrude from the outer surface of the trocar 400 toward the inner space thereof. Therefore, one end of the inclined anti-catching member 330 may come into contact with a portion of the pressing member 420 disposed in the inner space of the trocar 400 during insertion into a hole formed at the tip of the trocar 400.

[0085] When the anti-snap member 330 is pressed by the pressing member 420, as described above, the accommodating member 310 integrally connected to the anti-snap member 330 may also be pressed and deformed, and the blade 320 integrally connected to the accommodating member 3102 may be deformed into the pressed shape.

[0086] Then, the blade 320 is deformed to a height that does not catch on the tip surface 410 of the trocar 400, and therefore the blade 320 can be easily inserted inside the trocar 400 without interfering with the tip surface 410.

[0087] On the other hand, even if the anti-snag member 330 is easily inserted into the hole formed at the tip of the trocar 400, the end of the blade 320 may come into contact with the tip surface 410 of the trocar 400 and become caught.

[0088] In this case, even if the blade 320 comes into contact with and gets caught on the tip surface 410 of the trocar 400, the user can insert it into the inner space of the trocar 430 through the incision groove 430 formed by cutting the tip side of the trocar 400.

[0089] That is, when the blade 320 is caught on the distal end surface 410 of the trocar 400, the operator can use the handle of the tissue removal device 10 to rotate the catheter 50 inserted into the trocar 400. Then, the tissue removal unit 30 rotates in conjunction with the rotation of the catheter 50, so that the blade 320 caught on the distal end surface 410 of the trocar 400 can be inserted into the internal space of the trocar 400 through the incision groove 430 shown in FIG.

[0090] The removal module 100 of the tissue removal device according to one embodiment of the present invention allows the bending member 220, which is bent at a predetermined angle inside the patient's body, and the shaft 40 and tissue removal portion 300 exposed to the outside on the bending member 220, to be easily inserted into the inner space of the trocar 400 through a hole formed at the tip of the trocar 400.

[0091] In addition, the removal module 100 of the tissue removal device according to one embodiment of the present invention allows the user to quickly resolve the phenomenon of the blade 320 getting caught on the tip of the trocar 400 even if the blade 320 comes into contact with the tip of the trocar 400.

[0092] In addition, the removal module 100 of the tissue removal device according to one embodiment of the present invention can prevent the blade 320 or bending member 220 that cuts the tissue from being damaged during the process of removing the tissue that causes the lesion, thereby preventing the surgical tool from remaining inside the patient's body.

[0093] While specific embodiments of the present invention have been described above, it is obvious that various modifications can be made without departing from the scope of the present invention.

[0094] For example, the anti-snap member 330 may be made of a different material from that of the receiving member 310 and provided at the longitudinal end of the receiving member 310. That is, it goes without saying that the anti-snap member 330 may be separately manufactured and connected to the end of the receiving member 310.

[0095] Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the following claims as well as equivalents thereto. [Industrial Applicability]

[0096] The present invention can be applied and sold in the medical industry.

Claims

1. a bending section connected to the distal end of the catheter and bent from the distal end of the catheter by a user's operation while maintaining a predetermined curvature; a tissue removal portion that is exposed on the bending portion together with a shaft that moves back and forth by a user's operation when the bending portion is bent, When the tissue removal portion is exposed to the outside from the tip of the trocar and then inserted into the inside of the trocar, the tissue removal portion is inserted into the inside of the trocar while being deformed so as not to get caught on the tip side of the trocar.

10. A tissue removal module of a tissue removal device.

2. The bending portion is an insertion member that is inserted into a hole formed at the tip of the catheter; a bending member that is integrally connected to the insertion member and that can be bent at a predetermined curvature. The removal module of the tissue removal device of claim 1 .

3. The bending portion is a mounting groove formed along the longitudinal direction of the bending member, into which a shaft that has passed through the distal end of the catheter is mounted; The removal module of the tissue removal device of claim 2 .

4. The tissue removal unit includes: a housing member joined to a part of an outer circumferential surface of the shaft while housing the shaft; a blade connected to the housing member and adapted to contact the tissue to be removed; an anti-snap member provided at a longitudinal end of the housing member and inserted into the trocar before the blade; The removal module of the tissue removal device of claim 1 .

5. The end of the anti-snap member is inclined downward. The removal module of the tissue removal device of claim 4 .

6. The end of the anti-catching member comes into contact with the tip surface of the trocar or with a pressing member formed to protrude from the tip side of the trocar toward the inside of the trocar. The removal module of the tissue removal device of claim 4 .

7. The blade is The device can be inserted into the inside of the trocar through an incision groove formed by cutting the distal end of the trocar. The removal module of the tissue removal device of claim 4 .

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