Guider for placing laparoscopic hyperthermic perfusion tube and placing device
By designing a guide for laparoscopic thermal perfusion tube, the combination of puncture rod and guide tube solves the problem of difficulty and inefficiency in thermal perfusion tube, and achieves rapid and simple placement, reducing patient damage and reducing costs.
Patent Information
- Application Number
- CN202421171430.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The laparoscopic thermal perfusion tube is difficult to place in the abdominal cavity, inefficiency, and additional damage to the patient.
A guide is designed including a puncture rod and a guide tube, through which the abdominal puncture rod is performed, and the puncture rod is then removed, leaving the guide tube as a channel, and the guide wire is detachedly connected to the thermal perfusion tube, and the thermal perfusion tube is placed in the abdominal cavity through the guide tube channel.
The rapid and simple placement of thermal perfusion tubes is achieved, which reduces damage to patients, improves surgical efficiency, and reduces costs.
Smart Images
Figure CN222854427U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of laparoscopic surgical instruments, in particular to a guide and a placement device for placing a laparoscopic hot perfusion tube. Background Art
[0002] With the development of laparoscopic surgery, laparoscopic surgery has become an important and commonly used method and means to treat malignant tumors. Intraperitoneal hyperthermic perfusion chemotherapy has become an important auxiliary means for the treatment of malignant tumors. Intraperitoneal hyperthermic perfusion chemotherapy refers to the circulation of chemotherapy drugs through the hot perfusion tube, filling the abdominal cavity and maintaining it for a certain period of time to prevent and treat tumor peritoneal implantation and metastasis.
[0003] Before intraperitoneal hyperthermic chemotherapy, a hyperthermic perfusion tube is usually placed in four places of the patient's left upper and lower abdomen and right upper and lower abdomen. Currently, the peritoneal hyperthermic perfusion tubes used in clinical practice are silicone soft tubular structures. The placement of the hyperthermic perfusion tube under laparoscopic surgery is to place the hyperthermic perfusion tube from the laparoscope coarse card into the appropriate position in the abdominal cavity. However, due to the cavity structure and soft material of the hyperthermic perfusion tube itself, it is very difficult to place it directly in the designated position in the abdominal cavity. Laparoscopic instruments are required to assist by entering the laparoscope coarse card on the other side. After the laparoscopic instrument enters the abdominal cavity from the auxiliary hole coarse card, the hyperthermic perfusion tube placed in the coarse card is clamped and fixed from the front end of the coarse card where the hyperthermic perfusion tube is placed, and the hyperthermic perfusion tube is pulled into the abdominal cavity and placed in the appropriate position and kept fixed. Then the coarse card where the hyperthermic perfusion tube is placed is pulled out to complete the placement of a hyperthermic perfusion tube.
[0004] Clinically, the inner diameter of the laparoscope coarse card may not match the inner diameter of the hot perfusion tube actually used, and the hot perfusion tube is made of a soft material and has a hollow structure, which leads to great resistance and difficulty when entering the coarse card to place the hot perfusion tube into the abdominal cavity, and it cannot be quickly and conveniently placed in the appropriate position in the abdominal cavity. In addition, the current placement method must use an auxiliary hole coarse card to complete the placement, resulting in the need to use a separate auxiliary hole coarse card when placing the last hot perfusion tube. If there is no additional auxiliary hole coarse card puncture hole, the placement difficulty is further increased without the assistance of laparoscopic instruments. Therefore, it may happen that an additional coarse card puncture hole is established for the patient in order to place the hot perfusion tube, causing greater damage to the patient. Utility Model Content
[0005] The utility model provides a guide and a placement device for laparoscopic hot perfusion tube placement, so as to solve the technical problems of hot perfusion tube placement difficulty, low efficiency and additional damage to patients faced by hot perfusion chemotherapy in the peritoneal cavity in the clinic in the prior art.
[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0007] A guide for placing a laparoscopic hot perfusion tube, the guide may include a puncture rod and a guide tube, wherein the guide tube is detachably sleeved on the puncture rod and forms the guide as a whole with the puncture rod, both ends of the puncture rod are located outside the guide tube, the puncture rod can drive the guide tube to perform abdominal puncture, the puncture rod can be disassembled and removed from the guide tube after puncture, the guide tube can be retained at the puncture position and leave a channel for the hot perfusion tube to enter the abdominal cavity; an external thread may be formed on the outer wall of the puncture rod, and an internal thread is formed on the inner wall of the guide tube, and the external thread and the internal thread can cooperate with each other.
[0008] Here, the introducer adopts an inner and outer double-layer structure, and puncture is performed using the inner puncture rod, and the outer guide tube is placed at the puncture hole. The puncture rod is taken out, and the rigid structure of the outer guide tube can be used to open the puncture hole, thereby leaving a channel when the puncture rod is taken out, so that the hot perfusion tube can pass through the abdominal wall and enter the abdominal cavity for placement. The prior art requires opening an additional auxiliary hole and relying on the laparoscope's coarse card and clamping tools to reach into the abdominal cavity for pulling from the inside, and at least two punctures are required on the abdominal wall. The introducer of the utility model only requires one puncture to achieve the placement of the hot perfusion tube, which can minimize damage to the patient, while also simplifying the operation method, with higher efficiency and lower cost.
[0009] The external thread of the puncture rod and the internal thread of the guide tube can cooperate with each other, and the puncture rod and the guide tube can be detachably connected. The relative position of the puncture rod in the guide tube can also be adjusted by twisting the puncture rod or the guide tube to adjust the matching position of the internal and external threads.
[0010] As a preferred solution of the utility model, the external thread of the puncture rod can be replaced by a buckle, and the internal thread of the guide tube can be replaced by a slot. The slot and the buckle can cooperate with each other to detachably connect the puncture rod and the guide tube.
[0011] As a preferred solution of the utility model, a sharp thorn portion may be formed on one end of the puncture rod used for puncture, and the sharp thorn portion is used to puncture the abdominal wall so that the puncture rod completes the puncture.
[0012] As a preferred solution of the utility model, a handle may be formed on one end of the puncture rod for holding, and the handle is used to be held to operate the puncture rod.
[0013] As a preferred solution of the present invention, the puncture rod and the guide tube can both be made of plastic material and can be used once.
[0014] A device for placing a laparoscopic hot perfusion tube, the placement device may include the guide for placing a laparoscopic hot perfusion tube as described above; the placement device also includes a guide wire and a hot perfusion tube, the guide wire can be inserted into the hot perfusion tube and detachably connected to the hot perfusion tube, the guide wire is used to drive the hot perfusion tube to pass through the channel of the guide tube to complete the placement of the hot perfusion tube in the abdominal cavity.
[0015] The placement device of the hot perfusion tube adopts a method of installing the guide wire in conjunction with the hot perfusion tube and entering the abdominal cavity for placement through the channel reserved by the guide tube. The outer diameter of the guide wire is slightly smaller than the inner diameter of the hot perfusion tube. After the guide wire is inserted into the hot perfusion tube, it can form an inner and outer overlapping whole, which is convenient for fixing the two and also convenient for pulling out and disassembling the guide wire from the hot perfusion tube. Since the outer diameter of the hot perfusion tube is smaller than the inner diameter of the guide tube, the hot perfusion tube can smoothly pass through the guide tube into the abdominal cavity. Therefore, the placement device can complete the operation of placing the hot perfusion tube with one puncture. Compared with the prior art, it is still necessary to use a laparoscope to enter the abdominal cavity from another channel and clamp the hot perfusion tube from the inside for placement. The placement device of the utility model has the technical advantages of easy operation, high efficiency and minimizing damage to the patient.
[0016] As a preferred solution of the present utility model, the heat perfusion tube can be made of a soft material, and the guide wire can be made of a hard material.
[0017] As a preferred embodiment of the utility model, one end of the heat perfusion tube is closed to form a closed end, and the other end is opened to form an open end; a through drainage hole is provided on the side wall of the heat perfusion tube, and the drainage hole is connected to the open end of the heat perfusion tube; after the heat perfusion tube is installed, the closed end and the drainage hole can be located in the abdominal cavity, and the open end can be located outside the abdominal cavity, so as to perform perfusion operations.
[0018] As a preferred solution of the present invention, a handle may be formed at one end of the guide wire, and the handle may be used to be held to operate the guide wire.
[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model include the following:
[0020] The guide and placement device for laparoscopic hot perfusion tube placement of the utility model solve practical problems that occur during the placement of hot perfusion tubes in clinical practice, facilitate clinical operations, and make the placement of hot perfusion tubes simpler and easier, thereby shortening the operation time, improving operation efficiency, and reducing patient damage; the utility model has a simple structure, and can use simple materials (such as plastic) as disposable products, which are used together with hot perfusion tubes, and are relatively low in cost, and will not particularly increase the burden of medical costs on patients and hospitals; and the utility model is disposable, which can reduce the probability of nosocomial infection caused by repeated disinfection. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 The utility model is a schematic diagram of the structure of a puncture rod in a guide for placing a laparoscopic hot perfusion tube.
[0022] Figure 2 The utility model is a schematic diagram of the structure of a guide tube in a guide device for placing a laparoscopic hot perfusion tube.
[0023] Figure 3 The utility model is a schematic diagram of the assembly of a guide for placing a laparoscopic hot perfusion tube.
[0024] Figure 4 The utility model is a schematic diagram showing that the hot perfusion tube and the guide wire in the placement device of the laparoscope hot perfusion tube cooperate and pass through the guide tube for placement.
[0025] Figure 5 It is a three-dimensional schematic diagram of a hot perfusion tube in a placement device for a laparoscope hot perfusion tube of the utility model.
[0026] Icons: 1. Puncture rod, 11. External thread, 12. Spiked part, 13. Handle, 2. Guide tube, 21. Internal thread, 3. Hot perfusion tube, 31. Closed end, 32. Open end, 33. Drainage hole, 4. Guide wire, 41. Grip. DETAILED DESCRIPTION
[0027] The present invention is further described in detail below in combination with test examples and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.
[0028] In the description of the specific embodiments of the present invention, unless otherwise specified, the terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the product / equipment / device of the utility model is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the utility model or simplifying the description in the specific embodiments, so that technicians can quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.
[0029] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the utility model.
[0030] In addition, the expressions “first”, “second”, “third”, etc. that appear in the terms are merely descriptions used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.
[0031] In addition, in the description of the embodiments of the present invention, "several", "multiple" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.
[0032] In addition, in the description of the technical solution of the utility model, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two components.
[0033] In the related art, placing a hot perfusion tube in the abdominal cavity to form a fluid channel connecting the inside and the outside is one of the most critical links in the peritoneal hot perfusion chemotherapy method. However, the clinical method of placing the hot perfusion tube requires using an auxiliary hole and a laparoscope to pull the hot perfusion tube to the required position. In addition, the placement of the last hot perfusion tube cannot be completed independently, which is time-consuming, labor-intensive, inefficient, and also causes great trauma to the patient.
[0034] Based on this, the utility model provides a guide for placing a laparoscopic hot perfusion tube, the guide comprising a puncture rod and a guide tube, wherein the guide tube is detachably sleeved on the puncture rod and forms the guide as a whole with the puncture rod, both ends of the puncture rod are located outside the guide tube, the puncture rod can drive the guide tube to perform abdominal puncture, and after puncture, the puncture rod can be disassembled and removed from the guide tube, the guide tube can be retained in the puncture position and leave a channel to facilitate the hot perfusion tube to enter the abdominal cavity for placement.
[0035] The utility model discloses a guide for placing a laparoscopic hot perfusion tube, which solves practical problems in the process of placing the hot perfusion tube in clinical practice, facilitates clinical operation, and makes the placement of the hot perfusion tube easier and more convenient, thereby shortening the operation time, improving operation efficiency, and reducing patient injury. The utility model has a simple structure, and can use simple materials (such as plastic) as a disposable product, which is used together with the hot perfusion tube, and has a relatively low cost, and will not increase the burden of medical costs on patients and hospitals. Moreover, the guide is disposable, which can reduce the probability of hospital infection caused by repeated disinfection.
[0036] Exemplary Embodiment 1
[0037] The present exemplary embodiment provides an introducer for laparoscopic hot perfusion tube placement.
[0038] Figure 1 It is a schematic structural diagram of a puncture rod in a guide for placement of a laparoscopic hot perfusion tube according to the utility model; Figure 2 It is a schematic structural diagram of a guide tube in a guide device for placement of a laparoscopic hot perfusion tube according to the utility model; Figure 3 It is a schematic diagram of the assembly of the puncture rod and the guide tube in the guide for placement of the laparoscopic hot perfusion tube of the utility model; Figure 4 It is a schematic diagram of the hot perfusion tube and the guide wire in the laparoscopic hot perfusion tube placement device of the utility model being matched and placed through the guide tube; Figure 5 It is a three-dimensional schematic diagram of a hot perfusion tube in a placement device for a laparoscope hot perfusion tube of the utility model.
[0039] like Figures 1 to 3As shown in , the guide for laparoscopic hot perfusion tube placement described in this exemplary embodiment may include a puncture rod 1 and a guide tube 2, wherein the puncture rod 1 may be a cylindrical rod structure, and the guide tube 2 may be a hollow barrel structure. The outer diameter of the puncture rod 1 may be slightly smaller than the inner diameter of the guide tube 2, and the guide tube 2 may be detachably sleeved on the puncture rod 1 and may form the guide as a whole with the puncture rod 1. The length dimension of the puncture rod 1 is greater than the length dimension of the guide tube 2. When the puncture rod 1 is inserted into the guide tube 2, both ends of the puncture rod 1 may be located outside the guide tube 2. The puncture rod 1 may drive the guide tube 2 to perform abdominal puncture, and the guide may pass through the patient's abdominal wall into the abdominal cavity. After puncture, the puncture rod 1 may be disassembled and removed from the guide tube 2, and the guide tube 2 may be retained at the puncture position and leave a channel to facilitate the hot perfusion tube 3 to enter the abdominal cavity for placement.
[0040] In this embodiment, an external thread 11 may be formed on the outer wall of the puncture rod 1, and an internal thread 21 may be formed on the inner wall of the guide tube 2. The external thread 11 and the internal thread 21 may cooperate with each other to detachably connect the puncture rod 1 and the guide tube 2. Specifically, when it is necessary to assemble the puncture rod 1 and the guide rod together, the operator can twist the puncture rod 1 to make the puncture rod 1 and the guide tube 2 rotate relative to each other, and at the same time, the external thread 11 on the outer wall of the puncture rod 1 can be matched with the internal thread 21 on the inner wall of the guide tube 2, so that the assembly between the puncture rod 1 and the guide tube 2 can be achieved; similarly, when it is necessary to disassemble and remove the puncture rod 1 from the guide rod, the operator can twist the puncture rod 1 in the reverse direction to make the puncture rod 1 and the guide tube 2 rotate relative to each other in the reverse direction, so that the external thread 11 on the outer wall of the puncture rod 1 and the internal thread 21 on the inner wall of the guide tube 2 can be disengaged, so that the disassembly between the puncture rod 1 and the guide tube 2 can be achieved.
[0041] In another embodiment of the present invention, a buckle (not shown in the figure) may be formed on the outer wall of the puncture rod 1, and a groove (not shown in the figure) may be formed on the inner wall of the guide tube 2, and the groove and the buckle can cooperate with each other to detachably connect the puncture rod 1 and the guide tube 2. Specifically, when the puncture rod 1 and the guide rod need to be assembled together, the operator can push the puncture rod 1 to move the puncture rod 1 axially in the guide tube 2, so that the buckle on the outer wall of the puncture rod 1 is engaged with the groove on the inner wall of the guide tube 2, so that the puncture rod 1 can be axially fixed in the guide tube 2, thereby realizing the assembly between the puncture rod 1 and the guide tube 2; similarly, when the puncture rod 1 needs to be disassembled and removed from the guide rod, the operator can apply a reverse axial force to the puncture rod 1, so that the buckle on the outer wall of the puncture rod 1 can be disengaged from the groove on the inner wall of the guide tube 2, and then the puncture rod 1 can be pulled out of the guide tube 2 to complete the disassembly between the puncture rod 1 and the guide tube 2.
[0042] It should be noted that the detachable connection between the puncture rod 1 and the guide tube 2 is not limited to threaded connection or slot and snap connection in the present invention. Any other achievable detachable connection method can be used in the present invention and is included in the protection scope of the present invention. The present invention does not make any specific limitation on this.
[0043] Optionally, a puncture portion 12 may be formed on one end of the puncture rod 1 for puncturing, and the puncture portion 12 may puncture the abdominal wall to facilitate the puncture rod 1 to complete the puncture operation; specifically, the puncture portion 12 may be a triangular pyramid, and the triangular pyramid may be made of a rigid material such as metal, and the puncture rod 1 may easily puncture the patient's abdominal wall under the action of the triangular pyramid, thereby allowing the guide to puncture into the abdominal cavity; the guide for laparoscopic hot perfusion tube placement described in the utility model can not only be used alone at a place where puncture is required, but can also be used on the original coarse card puncture hole, which can reduce damage to the patient's abdominal wall.
[0044] Optionally, a handle 13 may be formed on the other end of the puncture rod 1 away from the puncture end, and the handle 13 may be held to facilitate the installation, puncture or removal operation of the puncture rod 1; specifically, the handle 13 may be integrally formed and connected with the rod body of the puncture rod 1, and the handle 13 may be formed into a hemispherical shape, etc., so that its outer diameter may be significantly larger than the rod body of the puncture rod 1, so that it is convenient for the operator to hold it and apply axial push and pull forces and circumferential torque to the puncture rod 1 during operation; however, the utility model is not limited to this, and the connection method between the handle 13 and the rod body of the puncture rod 1 may also be other methods besides integral forming, such as welding, bolts, screws, etc., and the utility model does not make specific limitations on this.
[0045] Optionally, both the puncture rod 1 and the guide tube 2 can be made of disposable plastic material, which can be recycled and replaced after one use, which can meet the sterile hygiene requirements of the patient's wound, avoid infection, and greatly reduce the chance of nosocomial infection caused by repeated disinfection; but the utility model is not limited to this, and the materials of the puncture rod 1 and the guide tube 2 can also be selected from other materials besides plastic according to needs, and the utility model does not make specific limitations on this.
[0046] Exemplary Embodiment 2
[0047] This exemplary embodiment provides a device for placing a laparoscopic hot perfusion tube.
[0048] The laparoscopic hot perfusion tube placement device described in this exemplary embodiment may include the guide for laparoscopic hot perfusion tube placement described in Exemplary Embodiment 1.
[0049] like Figures 1 to 5As shown in the figure, the guide for placing the laparoscopic hot perfusion tube according to the exemplary embodiment may also include a hot perfusion tube 3 and a guide wire 4. The guide wire 4 may be inserted into the hot perfusion tube 3 and detachably connected to the hot perfusion tube 3. The hot perfusion tube 3 can pass through the channel of the guide tube 2 under the drive of the guide wire 4 and be placed at a designated position in the abdominal cavity (see Figure 4 ); specifically, the outer diameter of the guide wire 4 can be equivalent to the inner diameter of the hot perfusion tube 3 or the outer diameter of the guide wire 4 can be slightly larger than the inner diameter of the hot perfusion tube 3, so that after the guide wire 4 is inserted into the hot perfusion tube 3, the guide wire 4 can remain relatively fixed with the hot perfusion tube 3. When the hot perfusion tube 3 reaches the designated position in the abdominal cavity driven by the guide wire 4, the guide wire 4 can be manually pulled out of the hot perfusion tube 3, and the placement operation of the hot perfusion tube 3 is finally completed; here, the hot perfusion tube 3 is a soft material, such as rubber, and the guide wire 4 is a hard material, such as metal; the soft hot perfusion tube 3 can avoid damage to the patient's abdominal cavity during treatment, and the hard guide wire 4 can drive the soft hot perfusion tube 3 into the abdominal cavity under the action of its rigidity and accurately complete the placement operation.
[0050] Optionally, the length of the guide wire 4 may be generally greater than that of the hot perfusion tube 3 by more than 20 cm. Especially in puncture of obese patients, the guide wire 4 having sufficient length may facilitate the placement of the hot perfusion tube 3 through the thicker abdominal wall.
[0051] In this embodiment, one end of the hot perfusion tube 3 can be closed to form a closed end 31, and the other end can be opened to form an open end 32; a drainage hole 33 penetrating the side wall of the hot perfusion tube 3 can be opened, and the drainage hole 33 can be connected to the open end 32 of the hot perfusion tube 3, that is, liquid (usually chemotherapy drugs) can enter the hot perfusion tube 3 along the open end 32 of the hot perfusion tube 3 and flow from the hot perfusion tube 3 into the patient's abdominal cavity along the drainage hole 33, thereby performing a chemotherapy process; after the hot perfusion tube 3 is placed, the closed end 31 and the drainage hole 33 can be located in the abdominal cavity, and the open end 32 can be located outside the abdominal cavity, thereby facilitating the operation of drug perfusion; here, after the placement operation of the hot perfusion tube 3 is completed, the guide tube 2 can be removed from the puncture position, so that only the soft hot perfusion tube 3 can be retained at the wound position of the patient's abdominal cavity, thereby avoiding the hard guide tube 2 from causing further damage to the wound position of the patient's abdominal cavity.
[0052] In the present embodiment, a handle 41 may be formed at one end of the guide wire 4, and the handle 41 may be integrally formed and connected to the end of the guide wire 4. Specifically, the shape of the handle 41 may be spherical, or may be formed into other shapes that are convenient for holding operation, such as a cylinder or a block, and the present invention does not specifically limit this. The operator may hold the handle 41 to operate the guide wire 4, for example, the operator may hold the handle 41 to insert the guide wire 4 into the hot perfusion tube 3, and drive the hot perfusion tube 3 through the channel of the guide tube 2 into the abdominal cavity, place the hot perfusion tube 3 at a designated position in the abdominal cavity, and then hold the handle 41 to pull the guide wire 4 out of the hot perfusion tube 3.
[0053] The working process of the laparoscopic hot perfusion tube placement device and the placement method of the hot perfusion tube 3 described in this exemplary embodiment are described in detail below:
[0054] First, the operator can hold the handle 13, insert and fix the puncture rod 1 into the guide tube 2 to form a guide device, and then use the puncture part 12 to puncture the patient's abdominal wall. When the front end of the puncture rod 1 enters the abdominal cavity, the guide tube 2 also enters the puncture position and is inserted into the abdominal wall. The operator operates the handle 13 to disassemble and remove the puncture rod 1 from the guide tube 2. At this time, a hollow channel is formed in the middle of the guide tube 2 for the hot perfusion tube 3 to enter. Then the guide wire 4 is inserted into the hot perfusion tube 3 and the guide wire 4 and the hot perfusion tube 3 are kept relatively fixed. , use the guide wire 4 to extend the hot perfusion tube 3 along the middle channel of the guide tube 2 into the abdominal cavity. The operator can judge whether the hot perfusion tube 3 reaches the designated position in the abdominal cavity in the real-time picture of the laparoscope. At this time, the guide wire 4 can be used to control the hot perfusion tube 3 and adjust the position of the hot perfusion tube 3 in the abdominal cavity until the hot perfusion tube 3 reaches the designated position in the abdominal cavity, and then stop the operation, manually pull out the guide wire 4 from the hot perfusion tube 3, keep the hot perfusion tube 3 in the designated position in the abdominal cavity, and then manually remove the guide tube 2 from the abdominal puncture position, thereby completing the placement operation of the hot perfusion tube 3.
[0055] To sum up, the guide and placement device for laparoscopic hot perfusion tube placement of the utility model solve the practical problems arising in the clinical placement process of hot perfusion tubes, facilitate clinical operations, and make the placement of hot perfusion tubes simpler and easier, thereby shortening the operation time, improving operation efficiency, and reducing patient damage; it has a simple structure and can use simple materials (such as plastic) as a disposable product, and is used together with the hot perfusion tube, which is relatively low in cost and will not increase the burden of medical costs on patients and hospitals; and it is disposable, which can reduce the chance of nosocomial infection caused by repeated disinfection.
[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A guide for placing a laparoscopic hot perfusion tube, characterized in that: It comprises a puncture rod (1) and a guide tube (2), The guide tube (2) can be detachably sleeved on the puncture rod (1); the length of the puncture rod (1) is longer than that of the guide tube (2); the puncture rod (1) can move axially along the guide tube (2); and the inner diameter of the guide tube (2) is greater than the outer diameter of the thermal perfusion tube (3); An external thread (11) is formed on the outer wall of the puncture rod (1), and an internal thread (21) is formed on the inner wall of the guide tube (2), and the external thread (11) and the internal thread (21) can cooperate with each other.
2. The guide for placing a laparoscopic hot perfusion tube according to claim 1, characterized in that: The external thread is replaced by a buckle, and the internal thread is replaced by a slot, and the slot and the buckle can cooperate with each other.
3. The guide for laparoscopic hot perfusion tube placement according to claim 1, characterized in that: A spike portion (12) is formed at one end of the piercing rod (1).
4. The guide for placing a laparoscopic hot perfusion tube according to claim 1, characterized in that: The puncture rod (1) has a handle (13).
5. The guide for placing a laparoscopic hot perfusion tube according to claim 1, characterized in that: The puncture rod (1) and the guide tube (2) are both made of plastic.
6. A device for placing a laparoscopic hot perfusion tube, characterized in that: It comprises a guide for laparoscopic hot perfusion tube placement as claimed in any one of claims 1 to 5; the placement device also comprises a guide wire (4) and a hot perfusion tube (3), the guide wire (4) can be inserted into the hot perfusion tube (3) and is detachably connected to the hot perfusion tube (3), and the guide wire (4) is used to drive the hot perfusion tube (3) to pass through the guide tube (2).
7. The device for placing a laparoscopic hot perfusion tube according to claim 6, characterized in that: The hot perfusion tube (3) is made of a soft material, and the guide wire (4) is made of a hard material.
8. The device for placing a laparoscopic hot perfusion tube according to claim 6, characterized in that: One end of the heat perfusion tube (3) forms a closed end (31), and the other end forms an open end (32); a through drainage hole (33) is provided on the side wall of the heat perfusion tube (3).
9. The device for placing a laparoscopic hot perfusion tube according to claim 6, characterized in that: A handle (41) is formed at one end of the guide wire (4).