A vaginal after-loading guide implant needle treatment device, production equipment and production process

Abstract

The application provides a vagina after-loading guide implant needle treatment device, a production equipment and a production process, and belongs to the technical field of brachytherapy equipment for cervical cancer. The vagina after-loading guide implant needle treatment device comprises a guide main body and a positioning damping sleeve. The guide main body comprises a guide head end, an intermediate cylinder, a tail end cylinder and an extension handle. The positioning damping sleeve is arranged at the front end of the guide head end. A plurality of groups of straight implant needle channels and a plurality of groups of inclined implant needle channels are arranged through the guide main body. The production equipment of the vagina after-loading guide implant needle treatment device comprises a first injection molding device for producing the guide head end and the tail end cylinder and a second injection molding device for producing the intermediate cylinder and the extension handle. Each component is separately injection molded, and the straight implant needle channels and the inclined implant needle channels are demolded. The vagina after-loading guide implant needle treatment device, the production equipment and the production process improve the production efficiency and reduce the production cost.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of brachytherapy equipment for cervical cancer, and particularly relates to a vaginal afterloading guiding implantation needle treatment device, a production equipment and a production process. BACKGROUND

[0002] Cervical cancer is a very common gynecological malignant tumor. In the treatment of cervical cancer, radiotherapy is an important treatment method. In the radiotherapy process, an implantation needle is often used as a source applicator. The implantation needle is directly implanted into the tumor tissue. The implantation needle includes a main body portion and a conical tip along the length direction of the implantation needle. The main body portion of the implantation needle is provided with a hollow channel penetrating through the main body portion of the implantation needle. The hollow channel of the main body portion of the implantation needle creates a path for the radioactive source to enter the tumor tissue. The conical tip of the implantation needle enters the tumor tissue, which is beneficial to the direct delivery of the radioactive source to the inside of the tumor tissue. This can effectively reduce the damage of the radioactive rays to the normal tissue around the tumor tissue, and can improve the radiotherapy dose for the tumor tissue and the curative effect of radiotherapy, thereby obtaining better treatment effect. Therefore, during the implantation process of the implantation needle, the front end of the implantation needle needs to be accurately positioned to ensure that the front end of the implantation needle is accurately inserted into the target area and does not displace during the treatment process. If the front end of the implantation needle is inserted too shallowly, the treatment effect will be unsatisfactory. If the implantation needle is inserted too deeply, the adjacent organs such as the rectum and the bladder may be damaged. Therefore, accurate positioning of the front end of the implantation needle is crucial. In order to improve the accuracy of the positioning of the front end of the implantation needle, a treatment device for guiding the implantation needle is often used. The treatment device is inserted into the vagina. The treatment device is provided with a needle channel for guiding the implantation needle. The implantation needle is inserted into the needle channel. The treatment device is generally produced by 3D printing, which results in long production time, large material consumption, heavy weight and difficulty in operation. In addition, the medical supplies produced by 3D printing need to be sterilized and disinfected, which is complicated. Radiation sterilization can cause discoloration of the medical supplies, reduce the shelf life of the medical supplies and increase the production cost. SUMMARY

[0003] The application aims to provide a vaginal afterloading guiding implantation needle treatment device, a production equipment and a production process, which can solve the problems of long production time, large material consumption, heavy weight and difficulty in operation of the treatment device produced by 3D printing.

[0004] In order to achieve the above object, the technical scheme adopted by the present application is: a vagina rear-mounted guiding implanting needle treatment device is provided, comprising a guiding body and a positioning damping sleeve, the guiding body comprises a guiding head end, an intermediate cylinder, a tail end cylinder and an extension handle arranged coaxially in sequence, a central guiding hole is arranged through the shaft center of the guiding head end, the intermediate cylinder and the tail end cylinder, a central extension hole is arranged at the shaft center of the extension handle, the positioning damping sleeve is sleeved at the front end of the guiding head end, an implanting needle channel is arranged through the guiding body, the implanting needle channel is provided with multiple groups, the implanting needle channel comprises multiple groups of straight implanting needle channels and multiple groups of inclined implanting needle channels, a tail end straight needle channel hole is arranged through the rear end surface of the tail end cylinder, a tail end inclined needle channel hole is arranged through the side wall of the tail end cylinder, an intermediate partition plate is arranged in the intermediate cylinder, the intermediate partition plate is arranged perpendicular to the length direction of the intermediate cylinder, a middle straight needle channel hole and a middle inclined needle channel hole are arranged on the intermediate partition plate, a front end straight needle channel hole is arranged on the front end surface of the guiding head end, a front end inclined needle channel hole is arranged through the side wall of the guiding head end, the tail end straight needle channel hole, the middle straight needle channel hole and the front end straight needle channel hole are sequentially arranged on the path of the straight implanting needle channel, the tail end inclined needle channel hole, the middle inclined needle channel hole and the front end inclined needle channel hole are sequentially arranged on the path of the inclined implanting needle channel, the guiding head end, the intermediate cylinder, the tail end cylinder and the extension handle are respectively made by injection molding process.

[0005] In a possible implementation manner, the shaft center of the tail end cylinder is provided with a tail end guiding cylinder, the shaft center of the intermediate cylinder is provided with a middle guiding cylinder, the middle guiding cylinder is arranged through the intermediate partition plate, the shaft center of the guiding head end is provided with a front end guiding cylinder, and the central guiding hole sequentially penetrates through the tail end guiding cylinder, the middle guiding cylinder and the front end guiding cylinder.

[0006] In a possible implementation manner, a tail end connecting plate is arranged between the tail end guiding cylinder and the side wall of the tail end cylinder, a middle connecting plate is arranged between the middle guiding cylinder and the side wall of the intermediate cylinder, and a front end connecting plate is arranged between the front end guiding cylinder and the side wall of the guiding head end.

[0007] The vagina rear-mounted guiding implanting needle treatment device provided by the present application has the following beneficial effects:

[0008] Compared with the prior art, the guide body and the positioning damping sleeve are arranged, the guide body comprises a guide head end, an intermediate cylinder, a tail end cylinder and an extension handle which are coaxially arranged in sequence, the guide head end, the intermediate cylinder, the tail end cylinder and the extension handle are coaxially arranged in sequence from front to back, the positioning damping sleeve is sleeved on the front end of the guide head end and wrapped outside the front end and the side wall of the guide head end, a central guide hole is arranged through the axis of the guide body, a central extension hole is arranged through the axis of the extension handle, the central extension hole is used for placing a treatment tube for radiotherapy, an implantation needle channel is arranged through the guide body, the implantation needle is inserted into a specified residence point through the implantation needle channel, when the front end of the implantation needle advances to the positioning damping sleeve, the positioning damping sleeve has a damping effect on the implantation needle and has a certain resistance to the advancement of the implantation needle, at this time, the position of the front end of the implantation needle can be judged, according to the treatment requirement, the front end of the implantation needle can be inserted into the positioning damping sleeve but not pass through the positioning damping sleeve, or the front end of the implantation needle penetrates through the positioning damping sleeve, according to the advancement distance of the tail end of the implantation needle, the position of the front end of the implantation needle is determined, the positioning damping sleeve exerts a pressing force on the side wall of the implantation needle to limit the front end of the implantation needle, so that the front end of the implantation needle is prevented from being separated from the residence point due to the pressure of the surrounding tissue in the subsequent treatment process, and the treatment effect is affected, the implantation needle channel comprises a plurality of straight implantation needle channels and a plurality of inclined implantation needle channels, the front end of the implantation needle penetrating through the straight implantation needle channel penetrates through the front end of the positioning damping sleeve in a cylindrical shape, the front end of the implantation needle penetrating through the inclined implantation needle channel penetrates through the side wall of the positioning damping sleeve in a diverging horn shape, the inclination angle of the implantation needle penetrating through the inclined implantation needle channel is increased, the insertion depth of the front end of the implantation needle penetrating through the inclined implantation needle channel is reduced, and the treatment range is expanded, the treatment range is greater than that of the implantation needle penetrating through the straight implantation needle channel, the inside of the intermediate cylinder is provided with an intermediate partition plate, the rear end surface of the tail end cylinder is provided with a tail end straight needle channel hole, the intermediate partition plate is provided with a middle straight needle channel hole, and the front end surface of the guide head end is provided with a front end straight needle channel hole, the tail end straight needle channel hole, the middle straight needle channel hole and the front end straight needle channel hole are correspondingly arranged on the path of a group of straight implantation needle channels, the side wall of the tail end cylinder is provided with a tail end inclined needle channel hole, the intermediate partition plate is provided with a middle inclined needle channel hole, and the side wall of the guide head end is provided with a front end inclined needle channel hole, the tail end inclined needle channel hole, the middle inclined needle channel hole and the front end inclined needle channel hole are all inclined holes, and the tail end inclined needle channel hole, the middle inclined needle channel hole and the front end inclined needle channel hole are correspondingly arranged on the path of a group of inclined implantation needle channels, which is suitable for injection molding process and facilitates demolding of the inclined implantation needle channel.

[0009] The application provides a production equipment of a vaginal posterior loading guiding implantation needle treatment device, which is used for producing the vaginal posterior loading guiding implantation needle treatment device and comprises a first injection molding device and a second injection molding device. The first injection molding device is used for injection molding production of the guiding head end and the tail end barrel. The first injection molding device comprises a first front mold assembly and a first rear mold assembly. The first front mold assembly comprises a first upper mold frame and a first upper mold core. The first upper mold core is provided with a head end outer mold cavity and a tail end outer mold cavity on a side close to the first rear mold assembly. The first rear mold assembly comprises a first lower mold frame and a first lower mold core. The first lower mold core is provided with a head end inner mold group and a tail end inner mold group on a side close to the first front mold assembly. The head end inner mold group and the tail end inner mold group are connected and provided with a first glue inlet flow channel. The second injection molding device is used for injection molding production of the middle barrel and the extended handle. The second injection molding device comprises a second front mold assembly and a second rear mold assembly. The second front mold assembly comprises a second upper mold frame and a second upper mold core. The second upper mold core is provided with a middle outer mold cavity and a handle outer mold cavity on a side close to the second rear mold assembly. The second rear mold assembly comprises a second lower mold frame and a second lower mold core. The second lower mold core is provided with a middle inner mold group and a handle inner mold group on a side close to the second front mold assembly. The middle inner mold group and the handle inner mold group are connected and provided with a second glue inlet flow channel.

[0010] In a possible implementation, the tail end outer mold cavity is provided with a first straight needle mold group for forming the tail end straight needle hole, and the bottom of the head end inner mold group is provided with a second straight needle mold group for forming the front end straight needle hole.

[0011] In a possible implementation, the head end outer mold cavity is provided with a head end inclined needle hole demolding group around the head end outer mold cavity, and the tail end outer mold cavity is provided with a tail end inclined needle hole demolding group around the tail end outer mold cavity.

[0012] In a possible implementation, the head-end inclined needle channel demolding assembly comprises a head-end inclined needle die and a head-end tunnel sliding block, the head-end inclined needle die is arranged at one end of the head-end tunnel sliding block close to the head-end outer die cavity, the first upper die core is provided with a head-end tunnel sliding groove, the head-end tunnel sliding groove is radially distributed in the circumferential direction of the head-end outer die cavity, the head-end tunnel sliding groove has an inclination matching the head-end inclined needle channel hole, and the head-end tunnel sliding block slides along the head-end tunnel sliding groove to realize demolding of the head-end inclined needle die; the tail-end inclined needle channel demolding assembly comprises a tail-end inclined needle die and a tail-end tunnel sliding block, the tail-end inclined needle die is arranged at one end of the tail-end tunnel sliding block close to the tail-end outer die cavity, the first upper die core is provided with a tail-end tunnel sliding groove, the tail-end tunnel sliding groove is radially distributed in the circumferential direction of the tail-end outer die cavity, the tail-end tunnel sliding groove has an inclination matching the tail-end inclined needle channel hole, and the tail-end tunnel sliding block slides along the tail-end tunnel sliding groove to realize demolding of the tail-end inclined needle die.

[0013] In a possible implementation, a first cooling water channel is arranged around the head-end outer die cavity, the tail-end outer die cavity, the head-end inner die assembly and the tail-end inner die assembly, and a second cooling water channel is arranged around the middle outer die cavity, the handle outer die cavity, the middle inner die assembly and the handle inner die assembly.

[0014] In a possible implementation, the head-end inner die assembly, the tail-end inner die assembly and the middle inner die assembly are provided with latent glue inlets, and the handle inner die assembly is provided with a large water gap side glue inlet.

[0015] The production equipment of the vaginal rear-mounted guiding implantation needle treatment device provided by the application has the following beneficial effects:

[0016] Compared with the prior art, the first injection molding device for producing the leading head end and the tail end barrel and the second injection molding device for producing the middle barrel and the extended handle are included, the first injection molding device includes a first upper film frame, a first upper mold core, a first lower film frame and a first lower mold core, one side of the first upper mold core is provided with a head end outer mold cavity and a tail end outer mold cavity, one side of the first lower mold core is provided with a head end inner mold group and a tail end inner mold group, a first glue inlet flow channel connects the head end inner mold group and the tail end inner mold group, the head end outer mold cavity and the head end inner mold group are matched, and the two cooperate to perform injection molding production of the leading head end, the tail end outer mold cavity and the tail end inner mold group are matched, and the two cooperate to perform injection molding production of the tail end barrel, the second injection molding device includes a second upper film frame, a second upper mold core, a second lower film frame and a second lower mold core, one side of the second upper mold core is provided with a middle outer mold cavity and a handle outer mold cavity, one side of the second lower mold core is provided with a middle inner mold group and a handle inner mold group, a second glue inlet flow channel connects the middle inner mold group and the handle inner mold group, the middle outer mold cavity and the middle inner mold group are matched, and the two cooperate to perform injection molding production of the middle barrel, the handle outer mold cavity and the handle inner mold group are matched, and the two cooperate to perform injection molding production of the extended handle, the leading body includes four parts, which respectively perform injection molding production of the leading head end, the middle barrel, the tail end barrel and the extended handle, demolding of the tail end needle hole, the middle needle hole and the front end needle hole is facilitated, production efficiency is improved, and production cost is reduced.

[0017] A production process of a vaginal rear-mounted guiding implantation needle treatment device is provided, and the production process adopts the production equipment of any one of the vaginal rear-mounted guiding implantation needle treatment device described in the foregoing, is used for producing the vaginal rear-mounted guiding implantation needle treatment device described in the foregoing, and includes the following operation steps.

[0018] S1, the raw materials are heated and baked, and the molten raw materials are respectively injected into the first injection molding device and the second injection molding device;

[0019] S2, the production equipment is heated to a set temperature, and forming parameters are input;

[0020] S3, the molten raw materials are injected into the head end outer mold cavity and the tail end outer mold cavity of the first injection molding device or the middle outer mold cavity and the handle outer mold cavity of the second injection molding device under high pressure and high speed;

[0021] S4, the first cooling water channel and the second cooling water channel are cooled;

[0022] S5, the obtained leading head end, middle barrel, tail end barrel and extended handle are ejected and demolded;

[0023] S6, the leading head end, middle barrel, tail end barrel and extended handle are picked up;

[0024] S7, quality inspection is conducted on the guide head, the middle barrel, the tail barrel and the extension handle;

[0025] S8, the guide head, the middle barrel and the tail barrel are assembled and welded, the extension handle is installed at the tail end of the tail barrel, and the positioning damping sleeve is sleeved on the front end of the guide head;

[0026] S9, packaging and transportation. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 Structure diagram of the treatment device provided by the embodiment of the present application Figure One ;

[0029] Figure 2 Structure diagram of the treatment device provided by the embodiment of the present application Figure Two ;

[0030] Figure 3 Explosion structure diagram of the treatment device provided by the embodiment of the present application

[0031] Figure 4 Structure diagram of the guide head used in the embodiment of the present application

[0032] Figure 5 Structure diagram of the middle barrel used in the embodiment of the present application

[0033] Figure 6 Structure diagram of the tail barrel used in the embodiment of the present application

[0034] Figure 7 Internal structure diagram of the first injection molding device used in the embodiment of the present application Figure One ;

[0035] Figure 8 Internal structure diagram of the first injection molding device used in the embodiment of the present application Figure Two ;

[0036] Figure 9 Internal structure diagram of the first injection molding device used in the embodiment of the present application Figure Three ;

[0037] Figure 10 Internal structure diagram of the first injection molding device used in the embodiment of the present applicationFigure Four ;

[0038] Figure 11 The internal structure of the first injection molding device used in the embodiment of the present application Figure Five ;

[0039] Figure 12 The structure of the second injection molding device used in the embodiment of the present application

[0040] Figure 13 The internal structure of the second injection molding device used in the embodiment of the present application Figure One ;

[0041] Figure 14 The internal structure of the second injection molding device used in the embodiment of the present application Figure Two ;

[0042] Figure 15 The internal structure of the second injection molding device used in the embodiment of the present application Figure Three ;

[0043] Figure 16 The internal structure of the second injection molding device used in the embodiment of the present application Figure Four ;

[0044] In the figure: 1, positioning damping sleeve; 2, guide head end; 3, middle cylinder; 4, tail end cylinder; 5, extension handle; 6, center guide hole; 7, center extension hole; 8, threaded part; 9, clamping column; 10, clamping ring; 11, straight insertion needle channel; 12, oblique insertion needle channel; 13, tail end straight needle channel hole; 14, middle straight needle channel hole; 15, front end straight needle channel hole; 16, tail end oblique needle channel hole; 17, middle oblique needle channel hole; 18, front end oblique needle channel hole; 19, middle partition plate; 20, tail end guide cylinder; 21, tail end connecting plate; 22, middle guide cylinder; 23, middle connecting plate; 24, front end guide cylinder; 25, front end connecting plate; 26, first front mold assembly; 27, first upper film holder; 28, first upper mold core; 29, first rear mold assembly; 30, first lower film holder; 31, first lower mold core; 32, head end outer mold cavity; 33, tail end outer mold cavity; 34, head end inner mold group; 35, tail end inner mold group; 36, second front mold assembly; 37, second rear mold assembly; 38, second upper film holder; 39, second upper mold core; 40, second lower film holder; 41, second lower mold core; 42, middle outer mold cavity; 43, handle outer mold cavity; 44, middle inner mold group; 45, handle inner mold group; 46, first straight needle mold group; 47, second straight needle mold group; 48, head end oblique needle mold; 49, head end tunnel slider; 50, tail end oblique needle mold; 51, tail end tunnel slider; 52, first cooling water channel; 53, second cooling water channel. DETAILED DESCRIPTION

[0045] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0046] Please refer to Figures 1 to 6 A specific embodiment of a vaginal posterior loading guide implantation needle treatment device, production equipment and production process provided by the present application will be described. The device is provided with a guide main body and a positioning damping sleeve 1.

[0047] The guide main body includes a guide head end 2, an intermediate cylinder 3, a tail end cylinder 4 and an extension handle 5. The guide head end 2 is arranged at the front end of the intermediate cylinder 3. The tail end cylinder 4 is arranged at the tail end of the intermediate cylinder 3. A central guide hole 6 is arranged in sequence through the axis of the guide head end 2, the intermediate cylinder 3 and the tail end cylinder 4. The extension handle 5 is arranged at the tail end of the tail end cylinder 4. The axis of the extension handle 5 coincides with the axis of the tail end cylinder 4. The axis of the central extension hole 7 of the extension handle 5 coincides with the axis of the extension handle 5, which facilitates the placement of the treatment tube. A threaded portion 8 is arranged on the outside of the front end of the extension handle 5. The tail end of the tail end cylinder 4 is provided with a threaded groove matched with the threaded portion 8. The extension handle 5 and the tail end cylinder 4 are detachably connected. The end face and the side wall of the front end of the guide head end 2 are connected by a circular arc, which facilitates the device to enter the human body and reduces the damage to the human body. The positioning damping sleeve 1 is a cylindrical shape with an opening at the tail end. The positioning damping sleeve 1 is sleeved outside the front end and the side wall of the guide head end 2. A rubber sleeve clamping structure is arranged on the guide head end 2. The rubber sleeve clamping structure fixes the positioning damping sleeve 1 on the guide head end 2, avoiding the positioning damping sleeve 1 from slipping off during use and being left in the patient's body. The rubber sleeve clamping structure includes a clamping column 9 and a clamping ring 10. The clamping column 9 is arranged at the front end of the guide head end 2. The axis of the clamping column 9 coincides with the axis of the guide head end 2. The central guide hole 6 extends to the front end of the clamping column 9, which facilitates the placement of the treatment tube. The clamping ring 10 is arranged at the front end of the clamping column 9. The inner diameter of the clamping ring 10 is equal to the inner diameter of the clamping column 9. The outer diameter of the clamping ring 10 is greater than the outer diameter of the clamping column 9. The clamping ring 10 is located in front of the positioning damping sleeve 1. The front end of the positioning damping sleeve 1 is provided with a rubber sleeve center hole. The hole diameter of the rubber sleeve center hole can be in interference fit with the outer diameter of the clamping column 9. The clamping column 9 passes through the rubber sleeve center hole. The clamping ring 10 limits the positioning damping sleeve 1 between the clamping ring 10 and the guide head end 2, avoiding the positioning damping sleeve 1 from falling off during use. The positioning damping sleeve 1 can be made of silicone. The positioning damping sleeve 1 is arranged in close contact with the guide head end 2. The end face and the side wall of the front end of the positioning damping sleeve 1 are connected by a circular arc, which improves the comfort of the patient during the operation. The outer diameters of the positioning damping sleeve 1, the intermediate cylinder 3 and the tail end cylinder 4 are equal.

[0048] The axis of the central guide hole 6 coincides with the axes of the guide head end 2, the middle cylinder body 3 and the tail end cylinder body 4, the implantation needle channel penetrates through the guide head end 2, the middle cylinder body 3 and the tail end cylinder body 4, the implantation needle channel is provided in multiple groups, the implantation needle channel is suitable for the implantation needle to insert, the needle inlet of the implantation needle channel is arranged on the tail end cylinder body 4, and the needle outlet of the implantation needle channel is arranged on the front end of the guide head end 2. The positioning damping sleeve 1 is sleeved outside the needle outlet of the implantation needle channel, and is used for judging the position of the front end of the implantation needle penetrating out of the needle outlet of the implantation needle channel. When the implantation needle inserts into the positioning damping sleeve 1, the resistance of the implantation needle increases, and at this time, the position of the front end of the implantation needle can be judged. According to the treatment requirement, the front end of the implantation needle can be inserted into the positioning damping sleeve 1, but does not penetrate through the positioning damping sleeve 1, or the front end of the implantation needle penetrates through the positioning damping sleeve 1. According to the advancing distance of the tail end of the implantation needle, the position of the front end of the implantation needle is determined. The positioning damping sleeve 1 limits the front end of the implantation needle, so that the front end of the implantation needle is prevented from being separated from the residence point due to the pressure of the surrounding tissue in the subsequent treatment process, and the treatment effect is affected.

[0049] The implantation needle channel includes a straight implantation needle channel 11 and an inclined implantation needle channel 12. The straight implantation needle channel 11 and the inclined implantation needle channel 12 are provided in multiple groups. According to the actual situation, the straight implantation needle channel 11 or the inclined implantation needle channel 12 required to be inserted by the implantation needle is selected. The implantation needle can be inserted into only the straight implantation needle channel 11, only the inclined implantation needle channel 12 or both the straight implantation needle channel 11 and the inclined implantation needle channel 12.

[0050] The straight implantation needle channel 11 is arranged along the length direction of the guide body and is parallel to the axis of the guide body. The straight implantation needle channel 11 is uniformly distributed around the axis of the central guide hole 6. The needle inlet of the straight implantation needle channel 11 is arranged at the tail end of the tail end cylinder body 4. The needle outlet of the straight implantation needle channel 11 is arranged on the end face of the front end of the guide head end 2. The front end of the implantation needle penetrating through the straight implantation needle channel 11 penetrates through the end face of the front end of the positioning damping sleeve 1. The straight implantation needle channel 11 is provided in multiple groups. The position and quantity of the implantation needle are selected according to the specific position and size of the tumor tissue.

[0051] The rear end face of the tail end cylinder body 4 is provided with a tail end straight needle channel hole 13, which is the needle inlet of the straight implantation needle channel 11. The inside of the middle cylinder body 3 is provided with a middle partition plate 19, which is arranged perpendicular to the length direction of the middle cylinder body 3. The middle partition plate 19 is provided with a middle straight needle channel hole 14. The front end face of the guide head end 2 is provided with a front end straight needle channel hole 15, which is the needle outlet of the straight implantation needle channel 11. The tail end straight needle channel hole 13, the middle straight needle channel hole 14 and the front end straight needle channel hole 15 are sequentially arranged on the path of the straight implantation needle channel 11 and are one-to-one corresponding. The tail end straight needle channel hole 13, the middle straight needle channel hole 14 and the front end straight needle channel hole 15 are the implantation needle paths of the straight implantation needle.

[0052] The oblique insertion needle channel 12 has an angle with the axis of the guide body, the oblique insertion needle channel 12 is uniformly distributed in the circular direction of the central guide hole 6, the oblique insertion needle channel 12 inlet is arranged on the side wall of the tail end cylinder 4, the oblique insertion needle channel 12 outlet is located on the side wall of the front end of the guide head end 2, the oblique insertion needle channel 12 outlet is located on the outside of the straight insertion needle channel 11 outlet, the front end of the insertion needle passing through the oblique insertion needle channel 12 passes through the side wall of the positioning damping sleeve 1, and is in the shape of a diverging horn, which increases the inclination angle of the insertion needle passing through the oblique insertion needle channel 12, reduces the insertion depth of the front end of the insertion needle passing through the oblique insertion needle channel 12, expands the treatment range, and the treatment range is larger than that of the insertion needle passing through the straight insertion needle channel 11, the oblique insertion needle channel 12 is provided with multiple groups, and the position and number of the insertion needle are selected according to the specific position and size of the tumor tissue.

[0053] The tail end oblique needle channel hole 16 is arranged through the side wall of the tail end cylinder 4, which is the needle inlet of the oblique insertion needle channel 12, the middle part oblique needle channel hole 17 is arranged on the middle partition plate 19, the front end oblique needle channel hole 18 is arranged through the side wall of the guide head end 2, which is the needle outlet of the oblique insertion needle channel 12, the tail end oblique needle channel hole 16, the middle part oblique needle channel hole 17 and the front end oblique needle channel hole 18 are sequentially arranged on the path of the oblique insertion needle channel 12, and the tail end oblique needle channel hole 16, the middle part oblique needle channel hole 17 and the front end oblique needle channel hole 18 are arranged one by one, which are the insertion needle paths of the oblique insertion needle.

[0054] Further, the straight insertion needle channel 11 and the oblique insertion needle channel 12 do not intersect with each other.

[0055] The tail end guide cylinder 20 is arranged on the axis of the tail end cylinder 4, the tail end guide cylinder 20 and the side wall of the tail end cylinder 4 are arranged on the tail end connecting plate 21, the number of the tail end connecting plate 21 is consistent with the number of the tail end straight needle channel hole 13, the tail end straight needle channel hole 13 is arranged through the tail end connecting plate 21, the tail end oblique needle channel hole 16 is arranged on the side wall of the tail end cylinder 4 between the adjacent two groups of tail end connecting plates 21, the middle part guide cylinder 22 is arranged on the axis of the middle cylinder 3, the middle part guide cylinder 22 and the side wall of the middle cylinder 3 are arranged on the middle part connecting plate 23, the middle part connecting plate 23 is arranged away from the straight insertion needle channel 11 and the oblique insertion needle channel 12, the front end guide cylinder 24 is arranged on the axis of the guide head end 2, the front end guide cylinder 24 and the side wall of the guide head end 2 are arranged on the front end connecting plate 25, the number of the front end connecting plate 25 is consistent with the number of the front end straight needle channel hole 15, the front end straight needle channel hole 15 is arranged through the front end connecting plate 25, the front end oblique needle channel hole 18 is arranged on the side wall of the guide head end 2 between the adjacent two groups of front end connecting plates 25, and the front end connecting plate 25, the middle part connecting plate 23 and the tail end connecting plate 21 increase the stability of the device.

[0056] The application provides a vaginal after-loading guide implantation needle treatment device, compared with the prior art, the device is provided with a guide body and a positioning damping sleeve 1, the guide body comprises a guide head end 2, an intermediate cylinder body 3, a tail end cylinder body 4 and an extension handle 5 which are coaxially arranged in sequence, the guide head end 2, the intermediate cylinder body 3, the tail end cylinder body 4 and the extension handle 5 are coaxially arranged in sequence from front to back, the positioning damping sleeve 1 is sleeved on the front end of the guide head end 2 and wrapped on the front end and the outer side wall of the guide head end 2, a central guide hole 6 is arranged through the axis of the guide body, a central extension hole 7 is arranged through the axis of the extension handle 5, and the central extension hole 7 is used for placing a treatment tube for radiotherapy, an implantation needle channel is arranged through the guide body, the implantation needle is inserted into a specified residence point through the implantation needle channel, when the front end of the implantation needle advances to the positioning damping sleeve 1, the positioning damping sleeve 1 has a damping effect on the implantation needle and has a certain resistance to the advancement of the implantation needle, at this time, the position of the front end of the implantation needle can be judged, according to the treatment requirement, the front end of the implantation needle can be inserted into the positioning damping sleeve 1 but not pass through the positioning damping sleeve 1, or the front end of the implantation needle penetrates through the positioning damping sleeve 1, according to the advancement distance of the tail end of the implantation needle, the position of the front end of the implantation needle is determined, the positioning damping sleeve 1 exerts a squeezing force on the side wall of the implantation needle and limits the front end of the implantation needle, so that the front end of the implantation needle is prevented from being separated from the residence point due to the pressure of the surrounding tissue in the subsequent treatment process and the treatment effect is affected, the implantation needle channel comprises a plurality of straight implantation needle channels 11 and a plurality of inclined implantation needle channels 12, the front end of the implantation needle passing through the straight implantation needle channel 11 penetrates through the front end of the positioning damping sleeve 1 and has a cylindrical shape, the front end of the implantation needle passing through the inclined implantation needle channel 12 penetrates through the side wall of the positioning damping sleeve 1 and has a diverging horn shape, the inclined angle of the implantation needle passing through the inclined implantation needle channel 12 is increased, the insertion depth of the front end of the implantation needle passing through the inclined implantation needle channel 12 is reduced, and the treatment range is expanded, the treatment range is greater than that of the implantation needle passing through the straight implantation needle channel 11, an intermediate partition plate 19 is arranged in the intermediate cylinder body 3, a tail end straight needle channel hole 13 is arranged on the rear end face of the tail end cylinder body 4, a middle straight needle channel hole 14 is arranged on the intermediate partition plate 19, a front end straight needle channel hole 15 is arranged on the front end face of the guide head end 2, the tail end straight needle channel hole 13, the middle straight needle channel hole 14 and the front end straight needle channel hole 15 are correspondingly arranged on the path of a group of straight implantation needle channels 11, a tail end inclined needle channel hole 16 is arranged on the side wall of the tail end cylinder body 4, a middle inclined needle channel hole 17 is arranged on the intermediate partition plate 19, and a front end inclined needle channel hole 18 is arranged on the side wall of the guide head end 2, the tail end inclined needle channel hole 16, the middle inclined needle channel hole 17 and the front end inclined needle channel hole 18 are all inclined holes, the tail end inclined needle channel hole 16, the middle inclined needle channel hole 17 and the front end inclined needle channel hole 18 are correspondingly arranged on the path of a group of inclined implantation needle channels 12, are suitable for injection molding production process and are convenient for demolding of the inclined implantation needle channel 12.

[0057] Please refer to Figures 7 to 16The production equipment for the vaginal rear-loading guiding implantation needle treatment device provided by the application comprises a first injection molding device and a second injection molding device. The first injection molding device is used for producing the guiding head end 2 and the tail end barrel 4. The second injection molding device is used for producing the middle barrel 3 and the extended handle 5. The first injection molding device comprises a first front mold assembly 26 and a first rear mold assembly 29. The first front mold assembly 26 comprises a first upper mold frame 27 and a first upper mold core 28. The first upper mold core 28 is provided with a head end outer mold cavity 32 and a tail end outer mold cavity 33 on the side close to the first rear mold assembly. The first rear mold assembly 29 comprises a first lower mold frame 30 and a first lower mold core 31. The first lower mold core 31 is provided with a head end inner mold group 34 corresponding to the head end outer mold cavity 32 and a tail end inner mold group 35 corresponding to the tail end outer mold cavity 33 on the side close to the first front mold assembly. The first upper mold core 28 is buckled on the first lower mold core 31. The head end outer mold cavity 32 and the head end inner mold group 34 form an injection molding cavity of the guiding head end 2. The tail end outer mold cavity 33 and the tail end inner mold group 35 form an injection molding cavity of the tail end barrel 4. The second injection molding device comprises a second front mold assembly 36 and a second rear mold assembly 37. The second front mold assembly 36 comprises a second upper mold frame 38 and a second upper mold core 39. The second upper mold core 39 is provided with a middle outer mold cavity 42 and a handle outer mold cavity 43 on the side close to the second rear mold assembly. The second rear mold assembly 37 comprises a second lower mold frame 40 and a second lower mold core 41. The second lower mold core 41 is provided with a middle inner mold group 44 corresponding to the middle outer mold cavity 42 and a handle inner mold group 45 corresponding to the handle outer mold cavity 43 on the side close to the second front mold assembly. The second upper mold core 39 is buckled on the second lower mold core 41. The middle outer mold cavity 42 and the middle inner mold group 44 form an injection molding cavity of the middle barrel 3. The handle outer mold cavity 43 and the handle inner mold group 45 form an injection molding cavity of the extended handle 5.

[0058] The cavity bottom of the tail end outer mold cavity 33 is provided with a first straight needle mold group 46 for forming the tail end straight needle hole 13 when demolding. The bottom of the head end inner mold group 34 is provided with a second straight needle mold group 47 for forming the front end straight needle hole 15 when demolding.

[0059] The head end outer mold cavity 32 is provided with a head end inclined needle hole demolding group around. The head end inclined needle hole demolding group is used for forming the head end inclined needle hole 18 when demolding. The head end inclined needle hole demolding group comprises a head end inclined needle mold 48 and a head end tunnel sliding block 49. The head end tunnel sliding block 49 is arranged at the end of the head end inclined needle mold 48 away from the head end outer mold cavity 32. The first upper mold core 28 is provided with a head end tunnel sliding groove. The head end tunnel sliding block 49 is slidingly arranged in the head end tunnel sliding groove. The head end tunnel sliding groove has an inclination matching the front end inclined needle hole 18. The head end tunnel sliding groove is radially distributed in the circumferential direction of the head end outer mold cavity 32. The head end tunnel sliding block 49 slides along the head end tunnel sliding groove in the direction away from the head end outer mold cavity 32, so as to realize demolding.

[0060] The tail end inclined needle channel demolding assembly is arranged around the tail end outer mold cavity 33, and is used to form a tail end inclined needle channel hole 16 during demolding. The tail end inclined needle channel demolding assembly comprises a tail end inclined needle die 50 and a tail end tunnel sliding block 51. The tail end tunnel sliding block 51 is arranged at one end of the tail end inclined needle die 50 away from the tail end outer mold cavity 33. The first upper mold core 28 is provided with a tail end tunnel sliding groove. The tail end tunnel sliding block 51 is slidingly arranged in the tail end tunnel sliding groove. The tail end tunnel sliding groove has an inclination matching that of the tail end inclined needle channel hole 16. The tail end tunnel sliding groove is radially distributed around the tail end outer mold cavity 33. The tail end tunnel sliding block 51 slides along the tail end tunnel sliding groove towards a direction away from the tail end outer mold cavity 33, thereby achieving demolding.

[0061] The first cooling water channel 52 is arranged around the head end outer mold cavity 32, the tail end outer mold cavity 33, the head end inner mold assembly 34 and the tail end inner mold assembly 35. The second cooling water channel 53 is arranged around the middle outer mold cavity 42, the handle outer mold cavity 43, the middle inner mold assembly 44 and the handle inner mold assembly 45, thereby facilitating cooling and demolding.

[0062] The head end inner mold assembly 34, the tail end inner mold assembly 35 and the middle inner mold assembly 44 are provided with a latent glue inlet. The handle inner mold assembly 45 is provided with a large water hole side glue inlet.

[0063] The production equipment of the vaginal rear-mounted guiding implantation needle treatment device provided by the application comprises a first injection molding device for producing a guiding head end 2 and a tail end cylinder 4 and a second injection molding device for producing a middle cylinder 3 and an extended handle 5. The first injection molding device comprises a first upper film frame 27, a first upper mold core 28, a first lower film frame 30 and a first lower mold core 31. The first upper mold core 28 is provided with a head end outer mold cavity 32 and a tail end outer mold cavity 33 on one side. The first lower mold core 31 is provided with a head end inner mold group 34 and a tail end inner mold group 35 on one side. A first glue inlet flow channel connects the head end inner mold group 34 and the tail end inner mold group 35. The head end outer mold cavity 32 is matched with the head end inner mold group 34, and the two cooperate to produce the injection molding of the guiding head end 2. The tail end outer mold cavity 33 is matched with the tail end inner mold group 35, and the two cooperate to produce the injection molding of the tail end cylinder 4. The second injection molding device comprises a second upper film frame 38, a second upper mold core 39, a second lower film frame 40 and a second lower mold core 41. The second upper mold core 39 is provided with a middle outer mold cavity 42 and a handle outer mold cavity 43 on one side. The second lower mold core 41 is provided with a middle inner mold group 44 and a handle inner mold group 45 on one side. A second glue inlet flow channel connects the middle inner mold group 44 and the handle inner mold group 45. The middle outer mold cavity 42 is matched with the middle inner mold group 44, and the two cooperate to produce the injection molding of the middle cylinder 3. The handle outer mold cavity 43 is matched with the handle inner mold group 45, and the two cooperate to produce the injection molding of the extended handle 5. The guiding body comprises four parts, which are used to produce the injection molding of the guiding head end 2, the middle cylinder 3, the tail end cylinder 4 and the extended handle 5 respectively. The demolding of the tail end inclined needle hole 16, the middle inclined needle hole 17 and the front end inclined needle hole 18 is facilitated, the production efficiency is improved, and the production cost is reduced.

[0064] The production process of the vaginal rear-mounted guiding implanting needle treatment device provided by the application adopts the production equipment of the vaginal rear-mounted guiding implanting needle treatment device described in any one of the preceding articles, is used for producing the vaginal rear-mounted guiding implanting needle treatment device described in any one of the preceding articles, and comprises the following operation steps: the raw materials are heated and baked, and the raw materials in a molten state are respectively injected into the first injection molding device and the second injection molding device; the production equipment is heated to a set temperature, and forming parameters are input; the raw materials in a molten state are injected into the head end outer mold cavity 32 and the tail end outer mold cavity 33 of the first injection molding device or the middle outer mold cavity 42 and the handle outer mold cavity 43 of the second injection molding device under the conditions of high pressure and high speed; the first cooling water channel 52 and the second cooling water channel 53 are cooled; the obtained guiding head end 2, middle cylinder body 3, tail end cylinder body 4 and extended handle 5 are ejected and demolded; the guiding head end 2, middle cylinder body 3, tail end cylinder body 4 and extended handle 5 are picked up; the guiding head end 2, middle cylinder body 3, tail end cylinder body 4 and extended handle 5 are subjected to quality inspection; the guiding head end 2, middle cylinder body 3 and tail end cylinder body 4 are assembled and welded, the ultrasonic welding machine can be used for welding, the extended handle 5 is installed at the tail end of the tail end cylinder body 4, and the positioning damping sleeve 1 is sleeved at the front end of the guiding head end 2; the finished treatment device is packaged, the high-frequency heat packaging method can be used, the packaged treatment device is subjected to irradiation sterilization, and the sterilized treatment device is loaded into a vehicle for transportation.

[0065] The above are only preferred embodiments of the application and are not used to limit the application, and any modification, equivalent replacement and improvement made within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A vaginal afterloading guide implant needle treatment device, characterized in that, The utility model relates to a kind of needle guide, including: guide body and positioning damping sleeve, the guide body includes sequentially coaxially arranged guide head end, intermediate cylinder, tail end cylinder and extension handle, the shaft center of the guide head end, the intermediate cylinder and the tail end cylinder is provided with center guide hole, the shaft center of the extension handle is provided with center extension hole, the positioning damping sleeve is sleeved in the front end of the guide head end, the needle insertion channel is provided through the guide body, the needle insertion channel is provided with multiple groups, the needle insertion channel includes multiple groups of straight needle insertion channel and multiple groups of oblique needle insertion channel, tail end straight needle channel hole is provided through the rear end surface of the tail end cylinder, tail end oblique needle channel hole is provided through the side wall of the tail end cylinder, the inside of the intermediate cylinder is provided with intermediate partition, the intermediate partition is arranged perpendicular to the length direction of the intermediate cylinder, the intermediate partition is provided with middle straight needle channel hole and middle oblique needle channel hole, the front end of the guide head end is provided with front end straight needle channel hole, front end oblique needle channel hole is provided through the side wall of the guide head end, the tail end straight needle channel hole, the middle straight needle channel hole and the front end straight needle channel hole are sequentially arranged on the path of the straight needle insertion channel, the tail end oblique needle channel hole, the middle oblique needle channel hole and the front end oblique needle channel hole are sequentially arranged on the path of the oblique needle insertion channel, the guide head end, the intermediate cylinder, the tail end cylinder and the extension handle are made of injection molding process respectively. The shaft center of the tail end cylinder is provided with tail end guide cylinder, the shaft center of the intermediate cylinder is provided with middle guide cylinder, the middle guide cylinder is provided through the intermediate partition, the shaft center of the guide head end is provided with front end guide cylinder, the center guide hole sequentially penetrates the tail end guide cylinder, the middle guide cylinder and the front end guide cylinder.

2. The vaginal afterloading seed implanting needle treatment device according to claim 1, wherein, Tail end connecting plate is arranged between the tail end guide cylinder and the side wall of the tail end cylinder, middle connecting plate is arranged between the middle guide cylinder and the side wall of the intermediate cylinder, front end connecting plate is arranged between the front end guide cylinder and the side wall of the guide head end.

3. A vaginal afterloading guide implant needle treatment device according to claim 2, characterized in that ​ 4. An apparatus for producing a vaginal afterloading guide implant needle treatment device, characterized by The application discloses a production method of a vaginal rear-loading guiding implant needle treatment device, and belongs to the technical field of medical devices.

5. The production apparatus of a vaginal afterloading guide implant needle treatment device according to claim 4, wherein The cavity bottom of the tail end outer mold cavity is provided with a first straight needle mold group for forming the tail end straight needle hole, and the bottom of the head end inner mold group is provided with a second straight needle mold group for forming the front end straight needle hole.

6. The production apparatus of a vaginal afterloading guide implant needle treatment device according to claim 4, wherein The head end outer mold cavity is provided with a head end inclined needle hole demolding group around the periphery, and the tail end outer mold cavity is provided with a tail end inclined needle hole demolding group around the periphery.

7. The production apparatus of a vaginal afterloading guide implant needle treatment device according to claim 6, wherein The head end inclined needle hole demolding group comprises a head end inclined needle mold and a head end tunnel sliding block, the head end inclined needle mold is arranged at one end of the head end tunnel sliding block close to the head end outer mold cavity, the first upper mold core is provided with a head end tunnel sliding groove, the head end tunnel sliding groove is radially distributed around the periphery of the head end outer mold cavity, the head end tunnel sliding groove has an inclination matching the front end inclined needle hole, and the head end tunnel sliding block slides along the head end tunnel sliding groove to realize demolding of the head end inclined needle mold; the tail end inclined needle hole demolding group comprises a tail end inclined needle mold and a tail end tunnel sliding block, the tail end inclined needle mold is arranged at one end of the tail end tunnel sliding block close to the tail end outer mold cavity, the first upper mold core is provided with a tail end tunnel sliding groove, the tail end tunnel sliding groove is radially distributed around the periphery of the tail end outer mold cavity, the tail end tunnel sliding groove has an inclination matching the tail end inclined needle hole, and the tail end tunnel sliding block slides along the tail end tunnel sliding groove to realize demolding of the tail end inclined needle mold.

8. The production apparatus of a vaginal afterloading guide implant needle treatment device according to claim 4, wherein First cooling water channels are arranged around the head end outer mold cavity, the tail end outer mold cavity, the head end inner mold group and the tail end inner mold group, and second cooling water channels are arranged around the middle outer mold cavity, the handle outer mold cavity, the middle inner mold group and the handle inner mold group.

9. The production apparatus of a vaginal afterloading guide implant needle treatment device according to claim 4, wherein The glue inlet of the head end inner mold, the tail end inner mold and the middle inner mold is a latent glue inlet, and the glue inlet of the handle inner mold is a large water gate side glue inlet.

10. A process for the production of a vaginal afterloading guide implant needle treatment device, characterized in that, The production equipment of the vaginal rear-loading guiding implantation needle treatment device of any one of claims 4-9 is used for producing the vaginal rear-loading guiding implantation needle treatment device of any one of claims 1-3, and includes the following operation steps: S1, the raw materials are heated and baked, and the molten raw materials are respectively injected into the first injection device and the second injection device; S2, the production equipment is heated to a set temperature, and forming parameters are input; S3, the molten raw materials are injected into the head end outer mold cavity, the tail end outer mold cavity of the first injection device, or the middle outer mold cavity, the handle outer mold cavity of the second injection device under high pressure and high speed; S4, the first cooling water channel and the second cooling water channel are cooled; S5, the obtained guiding head end, middle cylinder body, tail end cylinder body and extended handle are ejected and demolded; S6, the guiding head end, the middle cylinder body, the tail end cylinder body and the extended handle are picked up; S7, the guiding head end, the middle cylinder body, the tail end cylinder body and the extended handle are inspected; S8, the guiding head end, the middle cylinder body and the tail end cylinder body are assembled and welded, the extended handle is installed at the tail end of the tail end cylinder body, and the positioning damping sleeve is sleeved on the front end of the guiding head end; S9, packaging and transportation.

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