Operating catheter for minimally invasive spine surgery

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a spine minimally invasive surgery operation catheter which comprises a telescopic catheter piece, the telescopic catheter piece is of a hollow tubular structure with the two ends open, the input end of the telescopic catheter piece is connected with a flexible connecting piece, and the end, away from the telescopic catheter piece, of the flexible connecting piece is connected with a hard pipe. When the central axis of the telescopic catheter piece coincides with the central axis of the hard pipe, the central axis of the flexible connecting piece coincides with the central axis of the telescopic catheter piece and the central axis of the hard pipe, and the length of the telescopic catheter piece can be freely adjusted according to the depth of the telescopic catheter piece inserted into the skin through the arrangement of the telescopic catheter piece; the flexible connecting piece is located outside the body, when mistaken touch occurs in the operation process, the flexible connecting piece can absorb and buffer external force, direct conduction and influence on the catheter part inserted into the body are reduced, and the risk that a patient is injured due to the fact that the catheter is mistakenly touched is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical appliances, and in particular relates to a spinal minimally invasive surgery operating catheter. Background Art

[0002] In minimally invasive spinal surgery, since the incision is small, a catheter is needed to help form a specific channel at the surgical site so that surgical instruments can accurately reach the lesion location for operation while reducing damage to surrounding tissues.

[0003] The catheter of the prior art is generally inserted percutaneously into the tissue or gap near the spine, or enters a specific part of the spine through puncture or other methods when in use. Then other instruments enter the human body through the input end of the catheter to perform spinal treatment surgery. However, the part of the catheter exposed to the body requires the assistance of a surgeon to hold it by hand. During the holding process, the surgeon's line of sight may be affected, affecting the progress of the operation. Moreover, if the exposed part of the catheter is accidentally touched, the catheter may be displaced or dislocated, thereby affecting the surgical operation or causing bleeding, tissue damage and other problems, which will affect the surgical effect and the recovery of the spine. Therefore, in response to the above problems, we propose a minimally invasive spinal surgery catheter. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a spinal minimally invasive surgery operating catheter, which can not only avoid manual hand support during the operation, but also reduce the risk of injury to the patient caused by accidental contact of the catheter.

[0005] To achieve the above objectives, the utility model adopts the following technical solution: a spinal minimally invasive surgery operating catheter, comprising a telescopic catheter piece, the telescopic catheter piece being a hollow tubular structure with openings at both ends, the input end of the telescopic catheter piece being connected to a flexible connector, the end of the flexible connector away from the telescopic catheter piece being connected to a hard tube, and when the central axes of the telescopic catheter piece and the hard tube coincide with each other, the central axis of the flexible connector coincides with the central axes of the telescopic catheter piece and the hard tube.

[0006] The beneficial effects of the utility model are as follows: through the setting of the telescopic catheter piece, the length of the telescopic catheter piece can be adjusted at will according to the depth of insertion into the skin; when the telescopic catheter piece is inserted into the body, the flexible connecting piece is located outside the body; when an accidental collision occurs during the operation, the flexible connecting piece can absorb and buffer the external force, thereby reducing the direct conduction and impact on the catheter part inserted into the body, and reducing the risk of injury to the patient due to accidental collision of the telescopic catheter piece.

[0007] In order to facilitate the telescopic fixation of the telescopic catheter;

[0008] As a further improvement of the above technical solution: the telescopic catheter member includes a catheter 1 and a catheter 2, and the catheter 1 and the catheter 2 are threadedly connected.

[0009] The beneficial effect of this improvement is that through the setting of catheter one and catheter two, the connection length between catheter one and catheter two can be adjusted according to the insertion depth into the patient's body, so as to avoid the telescopic catheter part being exposed too long outside the body and being accidentally touched. In addition, catheter one and catheter two are connected by a thread, which not only makes it easy to adjust the length of the telescopic catheter part, but also fixes catheter two on catheter one.

[0010] To avoid scratching the skin and mucous membranes of the wound;

[0011] As a further improvement of the above technical solution: a cavity is provided in the wall of the first conduit, a threaded ring is provided in the cavity, and a threaded groove matching the threaded ring is provided on the inner wall of the second conduit.

[0012] The beneficial effect of this improvement is: a cavity is opened in the wall of catheter one, one end of catheter two is inserted into the cavity, and then the threaded groove on the inner wall of catheter two can be threadedly connected and fixed with the threaded ring on the inner wall of the cavity, so that the parts of catheter one and catheter two that contact the skin and mucous membranes have smooth surfaces and will not scratch the skin and mucous membranes.

[0013] In order to fix the part of the telescopic catheter member exposed outside the body;

[0014] As a further improvement of the above technical solution: a fixing ring is movably connected to the hard tube, and an adhesive layer is provided at one end of the fixing ring close to the flexible connector.

[0015] The beneficial effect of this improvement is: after the telescopic catheter piece is inserted into the body, the fixing ring is moved onto the telescopic catheter piece, and then the adhesive layer is brought into contact with the skin, the film on the surface of the adhesive layer is torn off, and the adhesive layer sticks the fixing ring to the skin around the wound, thereby fixing the portion of the telescopic catheter piece exposed outside the body and increasing the stability of the telescopic catheter piece.

[0016] In order to allow other operating instruments to pass smoothly through the interior of the catheter 1 and the catheter 2;

[0017] As a further improvement of the above technical solution: the input end of the catheter one is provided with an introduction portion, and the introduction portion is inclined downward from the input end of the catheter one to the output end of the catheter one.

[0018] The beneficial effect of this improvement is that when catheter two is inserted into the cavity, part of the wall of catheter one is located inside catheter two. When other instruments enter catheter one through catheter two, the inner wall of catheter one may form a certain resistance. At this time, the setting of the introduction part can allow other instruments to enter catheter two and come into contact with the introduction part, and the introduction part will guide other instruments into catheter one to avoid resistance to other instruments.

[0019] In order to facilitate the positioning of the catheter in the fixing ring;

[0020] As a further improvement of the above technical solution: the circumferential inner diameter of the fixing ring is larger than the circumferential inner diameter of the catheter 1.

[0021] The beneficial effect of this improvement is that when the catheter 1 is inserted into the body, if part of the catheter 1 is exposed, the fixing ring can be moved to the position of the catheter 1, and then the catheter 1 can be limited inside the fixing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0024] Figure 3 It is a schematic diagram of the structure of the utility model viewed from above;

[0025] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model;

[0026] Figure 5 For this utility model Figure 4 Schematic diagram of the enlarged structure of A.

[0027] In the figure: 1, telescopic catheter member; 101, catheter one; 102, catheter two; 2, flexible connector; 3, hard tube; 4, cavity; 5, threaded ring; 6, threaded groove; 7, fixing ring; 8, adhesive layer; 9, introduction part. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0029] like Figure 1-5As shown, a spinal minimally invasive surgery catheter comprises a telescopic catheter member 1, wherein the telescopic catheter member 1 is a hollow tubular structure with openings at both ends, wherein the telescopic catheter member 1 comprises a catheter 101 and a catheter 2 102, wherein the catheter 101 and the catheter 2 102 are threadedly connected, wherein an input end of the telescopic catheter member 1 is connected to a flexible connector 2, wherein an end of the flexible connector 2 away from the telescopic catheter member 1 is connected to a hard tube 3, and when the central axes of the telescopic catheter member 1 and the hard tube 3 coincide with each other, the central axis of the flexible connector 2 coincides with the central axes of the telescopic catheter member 1 and the hard tube 3;

[0030] Specifically, the catheter 1 101, the catheter 2 102 and the hard tube 3 can all be made of medical metal materials, medical polymer materials, etc., and the flexible connector 2 can be made of materials such as medical rubber and medical silicone. When performing minimally invasive surgery on patients with spinal diseases, the catheter 101 is inserted into the wound to enter a specific surgical site. At the same time, the lengths of the catheter 101 and the catheter 2 102 are adjusted according to the depth of insertion into the patient's body as needed. After the catheter 101 is inserted into the body, the portion of the catheter 2 102 exposed outside the body retains a shorter length. When an accidental collision occurs during the operation, since the exposed portion of the catheter 2 102 is shorter, it will directly contact the flexible connector 2. The flexible connector 2 can absorb and buffer external forces, reduce direct conduction and influence on the portion of the catheter inserted into the body, and reduce the risk of injury to the patient caused by accidental collision of the catheter. When other instruments need to be inserted into the body through the telescopic catheter 1, the setting of the hard tube 3 facilitates the operating doctor to insert other instruments into the flexible connector 2 and enter the body through the catheter 2 102 and the catheter 1 101.

[0031] Preferably, a cavity 4 is opened in the tube wall of the catheter 101, a threaded ring 5 is provided in the cavity 4, and a threaded groove 6 matched with the threaded ring 5 is opened on the inner wall of the catheter 2 102. A cavity 4 is opened in the tube wall of the catheter 101, and one end of the catheter 2 102 is inserted into the cavity 4. Then, the threaded groove 6 on the inner wall of the catheter 2 102 can be threadedly connected and fixed with the threaded ring 5 on the inner wall of the cavity 4, so that the parts of the catheter 101 and the catheter 2 102 that are in contact with the skin and mucous membranes have smooth surfaces and will not scratch the skin and mucous membranes.

[0032] Preferably, a fixing ring 7 is movably connected to the hard tube 3, and an adhesive layer 8 is provided at one end of the fixing ring 7 close to the flexible connector 2. After the telescopic catheter member 1 is inserted into the body, the fixing ring 7 is moved onto the telescopic catheter member 1, and then the adhesive layer 8 is brought into contact with the skin, and the film on the surface of the adhesive layer 8 is torn off. The adhesive layer 8 sticks the fixing ring 7 to the skin around the wound, fixes the part of the telescopic catheter member 1 exposed outside the body, and increases the stability of the telescopic catheter member 1.

[0033] Preferably, the input end of the catheter 101 is provided with an introduction portion 9, and the introduction portion 9 is inclined downward from the input end of the catheter 101 to the output end of the catheter 101. When the catheter 2 102 is inserted into the cavity 4, part of the tube wall of the catheter 101 is located inside the catheter 2 102. When other instruments enter the catheter 101 through the catheter 2 102, the inner wall of the catheter 101 may form a certain resistance. At this time, the setting of the introduction portion 9 can allow other instruments to contact the introduction portion 9 after entering the catheter 2 102. The introduction portion 9 guides the other instruments into the catheter 101 to avoid resistance to other instruments.

[0034] Preferably, the circumferential inner diameter of the fixing ring 7 is larger than the circumferential inner diameter of the catheter 101. Since the treatment position of each patient is different, the depth of insertion of the telescopic catheter member 1 into the body is also different. After the catheter 101 is inserted into the body, if part of the catheter 101 is exposed, the fixing ring 7 can be moved to the position of the catheter 101, and then the catheter 101 can be limited inside the fixing ring 7. When the telescopic catheter member 1 is accidentally touched during the operation, the fixing ring 7 can limit the part of the telescopic catheter member 1 exposed outside the body to prevent the telescopic catheter member 1 from shaking and shifting significantly.

[0035] The working principle and use process of the utility model are as follows: when using the device, the output end of the catheter 101 is inserted into the body, and then the length of the telescopic catheter member 1 inserted into the body is adjusted according to different surgical sites. By rotating the catheter 2 102, the length of the telescopic catheter member 1 is extended or shortened. Then, after the output end of the catheter 101 is inserted into the body, the part exposed outside the body is shortened to a suitable length as much as possible to avoid accidental contact with the telescopic catheter member 1 during the operation. Then, the fixing ring 7 is brought close to the skin, the film on the adhesive layer 8 is torn off, and the fixing ring 7 is fixed on the skin. When an accidental contact occurs during the operation, only the flexible connector 2 and the fixing ring 7 will be accidentally contacted, and the flexible connector 2 can absorb and buffer external forces, thereby reducing direct conduction and influence on the part of the telescopic catheter member 1 inserted into the body. Then, when other instruments are inserted into the body during the operation, by holding the fixing ring 7, the other instruments are passed through the fixing ring 7, the flexible connector 2, the catheter 2 102 and the catheter 1 101 into the human body.

[0036] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0037] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principle of the utility model, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A minimally invasive spinal surgery catheter, comprising a telescopic catheter member (1), characterized in that: The telescopic conduit member (1) is a hollow tubular structure with two ends open. The input end of the telescopic conduit member (1) is connected to a flexible connector (2). The end of the flexible connector (2) away from the telescopic conduit member (1) is connected to a hard tube (3). When the central axes of the telescopic conduit member (1) and the hard tube (3) coincide with each other, the central axis of the flexible connector (2) coincides with the central axes of the telescopic conduit member (1) and the hard tube (3).

2. A spinal minimally invasive surgery catheter according to claim 1, characterized in that: The telescopic conduit member (1) comprises a conduit 1 (101) and a conduit 2 (102), wherein the conduit 1 (101) and the conduit 2 (102) are threadedly connected.

3. A spinal minimally invasive surgery catheter according to claim 2, characterized in that: A cavity (4) is provided in the wall of the first conduit (101), a threaded ring (5) is provided in the cavity (4), and a threaded groove (6) matching the threaded ring (5) is provided on the inner wall of the second conduit (102).

4. The spinal minimally invasive surgery catheter according to claim 1, characterized in that: A fixing ring (7) is movably connected to the hard tube (3), and an adhesive layer (8) is provided at one end of the fixing ring (7) close to the flexible connecting piece (2).

5. The spinal minimally invasive surgery catheter according to claim 2, characterized in that: The input end of the conduit one (101) is provided with an introduction portion (9), and the introduction portion (9) is inclined downward from the input end of the conduit one (101) to the output end of the conduit one (101).

6. The spinal minimally invasive surgery catheter according to claim 4, characterized in that: The circumferential inner diameter of the fixing ring (7) is greater than the circumferential inner diameter of the conduit 1 (101).

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