Biliary tract particle tube implantation kit

Abstract

This utility model relates to a biliary particle tube implantation kit, including a particle tube implantation kit assembly and a particle tube. The particle tube is a hollow and transparent cylindrical tube with an opening at one end. The open end of the particle tube is coaxially connected to a connector with openings at both ends. A traction suture, which is an absorbable suture, is also installed on the outer wall of the particle tube. This utility model facilitates the rapid assembly of the particle tube and allows for easy integration with a self-expanding metal stent. During surgery, the particle tube and the self-expanding metal stent can be accurately, efficiently, and safely implanted into the predetermined position within the biliary tract.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to a biliary particle tube implantation kit. Background Technology

[0002] Currently, in the treatment of malignant obstructive jaundice, the combined implantation of biliary radioactive particle tubes and self-expanding metallic stents is a relatively effective interventional treatment method. While imaging equipment can be used to monitor the implantation of the particle tube during the procedure, current techniques require the use of a separate guide wire or tube to slowly push the particle tube into the patient's body. Once the tube is in place, the guide wire or tube is withdrawn. This method only allows for inward pushing of the particle tube during the procedure, and sometimes, due to misoperation, the particle tube may exceed the intended implantation position. Furthermore, the current technique does not facilitate the repositioning of the particle tube. Secondly, during the subsequent implantation and slow release of the self-expanding metallic stent, because the stent and particle tube are implanted separately, their positions can easily interfere with each other, sometimes requiring repeated adjustments. This results in low surgical efficiency, long procedure time, and an increased risk of complications such as biliary tract injury and infection, affecting the treatment outcome. Therefore, the current technique still has shortcomings and limitations. Utility Model Content

[0003] The purpose of this invention is to provide a biliary particle tube implantation kit to solve the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: A biliary particle tube implantation kit includes a particle tube implantation kit assembly and a particle tube. The particle tube is a hollow and transparent cylindrical tube with an opening at one end. The open end of the particle tube is coaxially connected to a connector with openings at both ends. A traction suture is also installed on the outer wall of the particle tube. The traction suture is an absorbable suture.

[0005] Furthermore, the particle tube implantation kit assembly includes a matching puncture needle assembly, a first guidewire, a first catheter sheath assembly, a guide bend, a second guidewire, and a second catheter sheath assembly. The length of the second catheter sheath assembly is greater than the length of the first catheter sheath assembly. The diameter of the second guidewire is greater than the diameter of the first guidewire, and the length of the second guidewire is greater than the length of the first guidewire. Both ends of the guide bend are open.

[0006] Furthermore, the second catheter sheath assembly includes a second dilator and a second catheter sheath slidably sleeved on the second dilator. The second catheter sheath includes a second sheath tube open at both ends. One end of the second sheath tube is coaxially fixedly connected to a second sheath handle open at both ends. A second hemostatic valve is disposed inside the second sheath handle. The second dilator includes a second dilator tube adapted to the inner diameter of the second catheter sheath. Both ends of the second dilator tube are located outside the second catheter sheath, and one end of the second dilator tube is a pointed tip. The other end of the second dilator tube is coaxially connected to a second handle open at both ends. The second handle and the second sheath handle are located at the same end of the second catheter sheath assembly.

[0007] Furthermore, a side branch tube is fixedly connected to one side of the second sheath handle to form a Y-shaped sheath handle, and a detachable heparin cap is installed at the end of the side branch tube away from the second sheath handle.

[0008] Furthermore, a second three-way valve is connected to the second sheath handle via a second connecting hose.

[0009] Furthermore, the first catheter sheath assembly and the second catheter sheath assembly have the same structure.

[0010] Furthermore, the puncture needle assembly includes a puncture needle core and a puncture cannula slidably sleeved on the puncture needle core. The puncture needle core includes a head end and a tail end. The head end of the puncture needle core is a puncture needle tip with a beveled surface, and the tail end of the puncture needle core is coaxially mounted with a puncture needle handle.

[0011] The beneficial effects of this utility model by adopting the above technical solution are as follows: This invention involves installing a connector at the open end of a particle tube. During particle tube assembly, after the required number of radioactive particles are introduced into the tube, a sealing plug or sealing sealant can be installed on the connector to facilitate sealing the particle tube and rapid assembly. Secondly, during particle tube implantation surgery, the sealed particle tube can be implanted into the patient's body using the particle tube implantation assembly. During implantation, a traction wire is installed on the particle tube, ensuring that the end of the traction wire furthest from the particle tube remains outside the patient's body. This allows medical personnel to easily move the particle tube outward by pulling the traction wire if the tube's position exceeds the intended implantation location. The particle tube is precisely adjusted to the predetermined implantation position. Furthermore, during the subsequent implantation and slow release of the self-expanding metal stent, the position of the particle tube can be fixed by pressing the traction suture located outside the patient's body, preventing any impact on the particle tube's position during the implantation of the self-expanding metal stent. This facilitates the implantation of the particle tube and the self-expanding metal stent into the predetermined position without multiple adjustments, thus shortening the operation time and reducing the risk of complications. In summary, this invention facilitates the rapid assembly of the particle tube and allows for the precise, efficient, and safe implantation of the particle tube and the self-expanding metal stent into the predetermined position within the bile duct during surgery. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A schematic diagram of the structure of the middle part of the device; Figure 3 This is a schematic diagram of the structure of some of the devices of this utility model; Figure 4 for Figure 1 One of the structural schematic diagrams of the middle part of the device in its split state; Figure 5 for Figure 1 The second schematic diagram of the middle part of the device in its split state; Figure 6 for Figure 1 The third schematic diagram of the middle part of the device in its split state.

[0013] Reference numerals: 1. Particle tube; 2. Connector; 3. Traction line; 4. Second catheter sheath assembly; 41. Second dilator; 411. Second dilator tube; 412. Second handle; 42. Second catheter sheath; 421. Second sheath tube; 422. Second sheath handle; 43. Side branch tube; 44. Heparin cap; 45. Second connecting hose; 46. Second three-way valve; 5. First catheter sheath assembly; 51. First dilator; 511. First dilator tube; 512. First handle; 52. First catheter sheath; 521. First sheath tube; 522. First sheath handle; 53. First connecting hose; 54. First three-way valve; 6. Puncture needle assembly; 61. Puncture needle core; 62. Puncture cannula; 63. Puncture needle handle; 7. Guide bend; 8. Second guidewire; 9. First guidewire; 10. Seal. Detailed Implementation

[0014] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0015] like Figures 1 to 6 As shown, this utility model provides a biliary particle tube implantation kit, including a particle tube implantation kit assembly and a particle tube 1. The particle tube 1 is a hollow and transparent cylindrical tube, which is used to hold the required radioactive particles. One end of the particle tube 1 is open, and the open end of the particle tube 1 is coaxially connected to a connector 2 with two open ends. Specifically, the connector 2 can be a Luer male connector. When assembling the particle tube 1, after the required number of radioactive particles are put into the particle tube 1, a sealing plug or sealing block can be installed on the connector 2 to seal the particle tube 1, so as to facilitate the rapid assembly of the particle tube 1.

[0016] Secondly, a traction suture 3 is installed on the outer wall of the particle tube 1. The traction suture 3 is an absorbable suture with a certain length. Specifically, during the particle tube implantation surgery, the sealed particle tube 1 can be implanted into the patient's body with the help of the particle tube implantation assembly. During the implantation of the particle tube 1, by setting the traction suture 3 on the particle tube 1, the end of the traction suture 3 away from the particle tube 1 can always be outside the patient's body. In this way, when the particle tube 1 is positioned beyond the predetermined implantation position, medical staff can pull the traction suture 3 to move the particle tube 1 outward, so as to accurately adjust the particle tube 1 to the predetermined implantation position; furthermore, subsequently During the continued implantation and slow release of the self-expanding metal stent, the position of the particle tube 1 can be fixed by pressing the traction line 3 located outside the patient's body, so as not to affect the position of the particle tube 1 during the implantation of the self-expanding metal stent. This makes it easier to implant the particle tube 1 and the self-expanding metal stent into the predetermined position without multiple adjustments, thereby shortening the operation time and reducing the risk of complications. In summary, this utility model can facilitate the rapid assembly of the particle tube 1 and can facilitate the combination with the self-expanding metal stent, so as to accurately, efficiently and safely implant the particle tube 1 and the self-expanding metal stent into the predetermined position in the bile duct during the operation.

[0017] Finally, since traction suture 3 is an absorbable suture, after the operation, only the traction suture 3 located outside the patient's body needs to be cut off, while the traction suture 3 located inside the patient's body is absorbable.

[0018] The specific setup method for the particle tube implantation kit assembly is as follows: Figures 1 to 6 As shown, the particle tube implantation kit assembly includes a matching puncture needle assembly 6, a first guidewire 9, a first catheter sheath assembly 5, a guide bend 7, a second guidewire 8, and a second catheter sheath assembly 4. The length of the second catheter sheath assembly 4 is greater than the length of the first catheter sheath assembly 5, i.e., the first catheter sheath assembly 5 is a short sheath; the second catheter sheath assembly 4 is a long sheath. The diameter of the second guidewire 8 is greater than the diameter of the first guidewire 9, and the length of the second guidewire 8 is greater than the length of the first guidewire 9, i.e., the first guidewire 9 is a standard medical guidewire, and the second guidewire 8 is a medical stiffened guidewire. Both ends of the guide bend 7 are open, and the guide bend 7 can be set as an existing medical stiff single-bend catheter, and the inner diameter of the guide bend 7 is greater than the diameter of the second guidewire 8. Specifically, the particle tube implantation kit assembly includes various medical devices required in particle tube implantation surgery. That is, this utility model is a matching medical device specifically for particle tube implantation surgery, so it can be used immediately, thus facilitating medical personnel to perform particle tube implantation surgery.

[0019] The specific configuration of the second catheter sheath assembly 4 is as follows: (e.g.) Figure 1 , Figure 3 and Figure 6As shown, the second catheter sheath assembly 4 includes a second dilator 41 and a second catheter sheath 42 slidably sleeved on the second dilator 41. The second catheter sheath 42 includes a second sheath tube 421 open at both ends. One end of the second sheath tube 421 is coaxially fixedly connected to a second sheath handle 422 open at both ends. A second hemostatic valve is disposed inside the second sheath handle 422. The second dilator 41 includes a second dilator tube 411 adapted to the inner diameter of the second catheter sheath 42. Both ends of the second dilator tube 411 are located outside the second catheter sheath 42, and one end of the second dilator tube 411 is a pointed tip. The other end of the second dilator tube 411 is coaxially connected to a second hemostatic valve open at both ends. The second handle 412 and the second sheath handle 422 are located at the same end of the second catheter sheath assembly 4. At this time, the structure of the second catheter sheath assembly 4 is the same as that of the existing long sheath. In use, the second guide wire 8 can be inserted into the second catheter sheath assembly 4. After the second catheter sheath assembly 4 reaches the obstruction site, the second dilator 41 can be withdrawn outward. Then, the closed particle tube 1 can be directly implanted into the patient's body along the second catheter sheath 42 with the existing guide wire or guide tube. During the implantation of the particle tube 1, the end of the traction line 3 away from the particle tube 1 can always be located outside the second catheter sheath 42, so that medical staff can pull the particle tube 1 through the traction line 3.

[0020] Furthermore, such as Figure 1 and Figure 6 As shown, a side branch tube 43 is fixedly connected to one side of the second sheath handle 422 to form a Y-shaped sheath handle. The side branch tube 43 is open at the end away from the second sheath handle 422 and is fitted with a detachable heparin cap 44. At this time, when implanting the sealed particle tube 1 into the patient's body, after removing the heparin cap 44, the sealed particle tube 1 can be first sent into the second catheter sheath 42 along the side branch tube 43, and then the particle tube 1 is implanted into the patient's body along the second catheter sheath 42 so that the traction line 3 passes through the side branch tube 43. Then, when the heparin cap 44 is installed on the side branch tube 43, the position of the traction line 3 can be fixed at any time. In this way, when medical staff observe the position of the particle tube 1 in real time, the position of the particle tube 1 can be avoided due to misoperation, thus making it easier for medical staff to observe whether the particle tube 1 is implanted in place.

[0021] Furthermore, such as Figure 1 , Figure 3 and Figure 6 As shown, the second sheath handle 422 is connected to a second three-way valve 46 via a second connecting hose 45. Specifically, during use, when the second catheter sheath assembly 4 is in place at the obstruction site, after the second dilator 41 is withdrawn outward, the required medication can be easily injected into the second catheter sheath 42 through the second three-way valve 46 and the second connecting hose 45.

[0022] The specific configuration of the first catheter sheath assembly 5 is as follows: (e.g.) Figure 1 and Figure 5As shown, the first catheter sheath assembly 5 and the second catheter sheath assembly 4 have the same structure. Specifically, the first catheter sheath assembly 5 includes a first dilator 51 and a first catheter sheath 52 slidably sleeved on the first dilator 51. The first catheter sheath 52 includes a first sheath tube 521 with openings at both ends. One end of the first sheath tube 521 is coaxially fixedly connected to a first sheath handle 522 with openings at both ends. A first hemostatic valve is provided inside the first sheath handle 522, and a first three-way valve 54 is connected to the first sheath handle 522 through a first connecting hose 53. The first dilator 51 includes a first dilator tube 511 that matches the inner diameter of the first catheter sheath 52. Both ends of the first dilator tube 511 are located outside the first catheter sheath 52, and one end of the first dilator tube 511 is a pointed tip. The other end of the first dilator tube 511 is coaxially connected to... The first handle 512 has openings at both ends. The first handle 512 and the first sheath handle 522 are located at the same end of the first catheter sheath assembly 5. Specifically, the first catheter sheath assembly 5 has the same structure as the existing short sheath. In use, the first guidewire 9 can be inserted into the first catheter sheath assembly 5. After the first catheter sheath assembly 5 is in place, the first dilator 51 can be withdrawn outward. At this time, contrast agent can be injected into the first catheter sheath 52 through the first three-way valve 54 and the first connecting hose 53 for contrast operation. Then, the first guidewire 9 can be inserted into the guide bend 7 along the first catheter sheath 52. After the guide bend 7 is in place, the biliary stenosis can be opened. After the first guidewire 9 is withdrawn outward, the second guidewire 8 can be inserted along the guide bend 7. After the second guidewire 8 is in place in the biliary tract, the guide bend 7 and the first catheter sheath 52 can be withdrawn outward in sequence.

[0023] The specific setup method for puncture needle assembly 6 is as follows: Figure 1 and Figure 4 As shown, the puncture needle assembly 6 includes a puncture needle core 61 and a puncture cannula 62 slidably sleeved on the puncture needle core 61. The puncture needle core 61 includes a head end and a tail end. The head end of the puncture needle core 61 is a puncture needle tip with a beveled surface. The tail end of the puncture needle core 61 is coaxially mounted with a puncture needle handle 63. Specifically, the inner diameter of the puncture cannula 62 is larger than the diameter of the first guide wire 9. When the puncture cannula 62 is sleeved on the puncture needle core 61, the head end of the puncture needle core 61 is exactly outside the puncture cannula 62. In use, after the puncture needle assembly 6 is punctured to the correct position, the puncture needle core 61 can be withdrawn outward through the puncture needle handle 63. Then, the first guide wire 9 can be inserted along the puncture cannula 62. After the first guide wire 9 is in place, the puncture cannula 62 can be withdrawn outward.

[0024] The specific usage process of this utility model is as follows: First, after the preoperative preparation is completed, the puncture needle assembly 6 is inserted into the patient's surgical site. After the puncture needle assembly 6 is in place, the puncture needle core 61 is withdrawn outward through the puncture needle handle 63. Second, the first guidewire 9 is inserted along the puncture cannula 62. After the first guidewire 9 is in place, the puncture cannula 62 is withdrawn outward. Third, the first catheter sheath assembly 5 is inserted through the first guidewire 9. After the first catheter sheath assembly 5 is in place, the first dilator 51 is withdrawn outward. At this time, contrast agent can be injected into the first catheter sheath 52 through the first three-way valve 54 and the first connecting hose 53. The angiography procedure is performed. The fourth step involves inserting the first guidewire 9 along the first catheter sheath 52 into the guide tube 7. Once the guide tube 7 is in place, the biliary stenosis can be opened, and then the first guidewire 9 is withdrawn. The fifth step involves inserting the second guidewire 8 along the guide tube 7. Once the second guidewire 8 is in place within the biliary tract, the guide tube 7 and the first catheter sheath 52 are withdrawn sequentially. The sixth step involves inserting the second guidewire 8 into the second catheter sheath assembly 4. Once the second catheter sheath assembly 4 is in place at the obstruction site, the second dilator 41 is withdrawn. At this point, the required medication can be injected into the second catheter sheath 42 through the second three-way valve 46 and the second connecting hose 45.

[0025] Step 7: When no side branch tube 43 is provided on the second sheath stem 422, the sealed particle tube 1 can be directly implanted into the patient's body along the second catheter sheath 42 using the existing guide wire or guide tube. During the implantation of the particle tube 1, the end of the traction line 3 away from the particle tube 1 can always be located outside the second catheter sheath 42, so that medical staff can pull the particle tube 1 through the traction line 3. When a side branch tube 43 is provided on the second sheath stem 422, after removing the heparin cap 44, the sealed particle tube 1 can be first sent into the second catheter sheath 42 along the side branch tube 43, and then the particle tube 1 can be implanted into the patient's body along the second catheter sheath 42 so that the traction line 3 passes through the side branch tube 43. Then, when the heparin cap 44 is installed on the side branch tube 43, the position of the traction line 3 can be fixed at any time. Step 8: After the particle tube 1 is implanted in place, the guide wire or guide tube and the second catheter sheath 42 are withdrawn outward in sequence. Finally, after continuing the implantation and slowly releasing the self-expanding metal stent, the traction line 3 is cut off to complete the implantation surgery.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A biliary particle tube implantation kit, characterized in that: The device includes a particle tube implantation kit assembly and a particle tube. The particle tube is a hollow and transparent cylindrical tube with an opening at one end. The open end of the particle tube is coaxially connected to a connector with openings at both ends. A traction suture is also installed on the outer wall of the particle tube. The traction suture is an absorbable suture.

2. The biliary particle tube implantation kit according to claim 1, characterized in that: The particle tube implantation kit assembly includes a matching puncture needle assembly, a first guidewire, a first catheter sheath assembly, a guide bend, a second guidewire, and a second catheter sheath assembly. The length of the second catheter sheath assembly is greater than the length of the first catheter sheath assembly. The diameter of the second guidewire is greater than the diameter of the first guidewire, and the length of the second guidewire is greater than the length of the first guidewire. Both ends of the guide bend are open.

3. The biliary particle tube implantation kit according to claim 2, characterized in that: The second catheter sheath assembly includes a second dilator and a second catheter sheath slidably sleeved on the second dilator. The second catheter sheath includes a second sheath tube open at both ends. One end of the second sheath tube is coaxially fixedly connected to a second sheath handle open at both ends. A second hemostatic valve is disposed inside the second sheath handle. The second dilator includes a second dilator tube adapted to the inner diameter of the second catheter sheath. Both ends of the second dilator tube are located outside the second catheter sheath, and one end of the second dilator tube is a pointed tip. The other end of the second dilator tube is coaxially connected to a second handle open at both ends. The second handle and the second sheath handle are located at the same end of the second catheter sheath assembly.

4. The biliary particle tube implantation kit according to claim 3, characterized in that: One side of the second sheath handle is fixedly connected to a side branch tube to form a Y-shaped sheath handle. The side branch tube is opened at the end away from the second sheath handle and is fitted with a detachable heparin cap.

5. The biliary particle tube implantation kit according to claim 3, characterized in that: A second three-way valve is connected to the second sheath handle via a second connecting hose.

6. The biliary particle tube implantation kit according to claim 5, characterized in that: The first catheter sheath assembly and the second catheter sheath assembly have the same structure.

7. A biliary particle tube implantation kit according to claim 2, characterized in that: The puncture needle assembly includes a puncture needle core and a puncture cannula slidably sleeved on the puncture needle core. The puncture needle core includes a head end and a tail end. The head end of the puncture needle core is a puncture needle tip with a beveled surface, and the tail end of the puncture needle core is coaxially mounted with a puncture needle handle.

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