Needle adjusting device suitable for back-mounted intracavity treatment

Abstract

The utility model discloses a needle adjusting device suitable for back-mounted intracavity treatment. The needle adjusting device comprises a needle adjusting device body and an interpolation needle. The needle adjuster body comprises a hollow cylinder and a piston bolt located in the hollow cylinder, a piston shaft is fixed at the rear end of the piston bolt, the rear end of the piston shaft extends out of the hollow cylinder, and the interpolation needle is detachably fixed at the front end of the piston bolt. According to the needle adjusting device suitable for the post-loading intracavity treatment, the accuracy of inserting an interpolation needle into tumor tissues can be controlled, repeated adjustment is not needed, pain caused to a patient can be reduced, and the time cost can be reduced.

Description

Technical Field

[0001] The utility model relates to a needle adjusting device suitable for post-loading intracavitary treatment. Background Art

[0002] Cervical cancer is the most common gynecological malignancy, and its morbidity and mortality rate rank second among female malignant tumors, second only to breast cancer. Treatments for cervical cancer include surgery, radiotherapy, chemotherapy, and comprehensive treatments combined with multiple methods. Radiotherapy, as the main treatment for cervical cancer, is suitable for patients with cervical cancer at all stages. CT-guided three-dimensional intracavitary afterloading therapy, brachytherapy, also known as afterloading therapy, is to place a sealed radioactive source directly into the natural lumen of the human body (such as the uterine cavity, vagina), or directly insert it into the tumor tissue, and release high-dose radiation in the tumor target area to kill the tumor. Based on the images guided by CT, the physician manually adjusts the depth of the interpolation needle by estimating the length of a hard object. The accuracy is difficult to control, and repeated adjustments are very likely to occur. It causes pain to the patient and takes a lot of time. Therefore, it is necessary to design a needle adjuster suitable for afterloading intracavitary treatment to improve the above-mentioned defects. Utility Model Content

[0003] The purpose of the utility model is to provide a needle adjuster suitable for post-loading intracavitary treatment to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides a needle adjuster suitable for post-loading intracavitary treatment, comprising a needle adjuster body and an interpolation needle;

[0005] The needle adjuster body comprises an empty cylinder and a piston bolt located in the empty cylinder, a piston shaft is fixed to the rear end of the piston bolt, the rear end of the piston shaft extends out of the empty cylinder, and the interpolation needle is detachably fixed to the front end of the piston bolt.

[0006] Preferably, an insertion hole is provided on the front end surface of the piston bolt, and a steel sheet is provided inside the piston bolt which is integrally arranged with the piston bolt. The steel sheet is perpendicular to the axial direction of the piston bolt, and the insertion hole extends backward to the front surface of the steel sheet. The interpolation needle is inserted into the insertion hole and the rear end of the interpolation needle rests against the front surface of the steel sheet.

[0007] Preferably, a recessed groove is provided on the rear end surface of the piston bolt, and the front end of the piston shaft is embedded and fixed in the recessed groove.

[0008] Preferably, the periphery of the piston bolt is wrapped with a layer of rubber, and the outer surface of the rubber is in contact with the inner wall of the hollow cylinder.

[0009] Preferably, an interpolation needle holder is fixed to the inner wall of the hollow cylinder at a position close to the front end of the hollow cylinder, and a positioning hole for the interpolation needle to pass through is provided on the interpolation needle holder.

[0010] Preferably, the interpolation needle holder is an arc-shaped piece located on one side of the empty cylinder and having a straight edge and an arc-shaped edge, the arc-shaped edge of the arc-shaped piece is fixed to the inner wall of the empty cylinder, the positioning hole is opened next to the straight edge of the arc-shaped piece and a notch is formed at the straight edge, and a gap is formed between the straight edge of the arc-shaped piece and the inner wall of the empty cylinder.

[0011] Preferably, the interpolation needle holder is a circular plate, and the outer circumference of the circular plate is fixed to the inner wall of the hollow cylinder.

[0012] Preferably, the open diameters at the front and rear ends of the hollow cylinder are the same.

[0013] Preferably, the empty cylinder is a transparent cylinder, and the side wall of the empty cylinder is provided with millimeter scale lines distributed at intervals along the length direction of the empty cylinder.

[0014] Preferably, a piston handle is fixed to the rear end of the piston shaft, and an empty cylinder handle is fixed to the outer periphery of the rear end of the empty cylinder.

[0015] Compared with the prior art, the needle adjuster of the utility model suitable for post-loading intracavitary treatment has the following beneficial effects:

[0016] (1) The hollow cylinder, piston bolt and piston shaft are used together to push the interpolation needle, so that the interpolation needle can be accurately inserted into the tumor tissue. The accuracy of the interpolation needle inserted into the tumor tissue can be controlled without repeated adjustment, which can reduce the pain caused to the patient and reduce the time cost.

[0017] (2) An interpolation needle holder and a positioning hole are provided. The positioning hole is for the interpolation needle to pass through. The interpolation needle holder can provide support for the interpolation needle to prevent the interpolation needle from bending due to the force of advancement.

[0018] (3) The setting of piston handle and empty cylinder handle can save effort during operation.

[0019] (4) The setting of the steel sheet can provide a holding force to the rear end of the interpolation needle, so that the interpolation needle can be smoothly moved forward and inserted into the tumor tissue.

[0020] (5) The millimeter scale on the empty tube can accurately determine the depth of the interpolation needle into the tumor tissue.

[0021] The present invention will become more clear through the following description in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model is a schematic diagram of the overall structure of the needle adjuster suitable for post-loading intracavitary treatment.

[0023] Figure 2 It is a schematic diagram of the combination of the piston bolt, piston shaft, piston handle and steel sheet.

[0024] Figure 3 for Figure 2 Schematic cross-section of .

[0025] Figure 4 Schematic diagram of the combination of the interpolation needle holder and the empty cylinder.

[0026] Description of the accompanying drawings: needle adjuster body 1, empty cylinder 11, empty cylinder handle 111, millimeter scale line 112, piston bolt 12, insertion hole 121, rubber 122, piston shaft 13, piston handle 131, interpolation needle 2, steel sheet 3, interpolation needle holder 4, positioning hole 41. DETAILED DESCRIPTION

[0027] Embodiments of the present invention will now be described with reference to the accompanying drawings, in which like reference numerals represent like elements.

[0028] Please refer to Figure 1-4 The needle adjuster suitable for post-loading intracavitary treatment includes a needle adjuster body 1 and an interpolation needle 2.

[0029] The needle adjusting device body 1 includes an empty cylinder 11 and a piston bolt 12 located in the empty cylinder 11, a piston shaft 13 is fixed to the rear end of the piston bolt 12, the rear end of the piston shaft 13 extends out of the empty cylinder 11, and the interpolation needle 2 is detachably fixed to the front end of the piston bolt 12. The interpolation needle 2 is pushed forward by the cooperation of the empty cylinder 11, the piston bolt 12 and the piston shaft 13.

[0030] The open diameters of the front and rear ends of the hollow cylinder 11 are the same. The hollow cylinder 11 is a transparent cylinder, and the side wall of the hollow cylinder 11 is provided with millimeter scale lines 112 spaced along the length direction of the hollow cylinder 11, which can accurately grasp the depth of the interpolation needle 2.

[0031] The front end surface of the piston bolt 12 is provided with an insertion hole 121, and a steel sheet 3 is arranged inside the piston bolt 12 and is integrally arranged with the piston bolt 12. The steel sheet 3 is perpendicular to the axial direction of the piston bolt 12, and the insertion hole 121 extends backward to the front surface of the steel sheet 3. The interpolation needle 2 is inserted into the insertion hole 121 and the rear end of the interpolation needle 2 is against the front surface of the steel sheet 3.

[0032] The rear end surface of the piston bolt 12 is provided with a recessed groove, and the front end of the piston shaft 13 is embedded and fixed in the recessed groove. The periphery of the piston bolt 12 is wrapped with a layer of rubber 122, and the outer surface of the rubber 122 contacts the inner wall of the hollow cylinder 11.

[0033] A piston handle 131 is fixed to the rear end of the piston shaft 13, and an empty cylinder handle 111 is fixed to the outer periphery of the rear end of the empty cylinder 11, which saves effort.

[0034] An interpolation needle holder 4 is fixed to the inner wall of the hollow cylinder 11 near the front end of the hollow cylinder 11 to prevent the interpolation needle 2 from bending due to the force of the push. A positioning hole 41 is provided on the interpolation needle holder 4 for the interpolation needle to pass through, and the positioning hole 41 corresponds to the insertion hole 121. The interpolation needle holder 4 is an arc-shaped piece located on one side of the hollow cylinder 11 and having a straight side and an arc-shaped side, and is made of a transparent plastic material. The arc-shaped side of the arc-shaped piece is fixed to the inner wall of the hollow cylinder 11. The positioning hole 41 is opened beside the straight side of the arc-shaped piece and a notch is formed at the straight side. A gap is formed between the straight side of the arc-shaped piece and the inner wall of the hollow cylinder 11. The setting of the gap facilitates observation so that the interpolation needle 2 can be accurately inserted into the insertion hole 121.

[0035] When in use, the rear end of the interpolation needle 2 is inserted into the positioning hole 41 of the interpolation needle holder 4 and the insertion hole 121 of the piston bolt 12 and the steel sheet 3 and fixed. The front end of the interpolation needle 2 extends out of the front end of the empty cylinder 11. The piston bolt 12 pushes the interpolation needle 2 forward by pushing the piston handle 131 forward, so that the interpolation needle 2 can be accurately inserted into the tumor tissue. The accuracy of the interpolation needle 2 inserted into the tumor tissue can be controlled without repeated adjustment, which can reduce the pain caused to the patient and reduce the time cost.

[0036] The utility model may also have other embodiments. In other embodiments, the interpolation needle holder 4 is a circular piece made of a transparent plastic material, and the outer circumference of the circular piece is fixed to the inner wall of the hollow cylinder 11 .

[0037] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A needle adjuster suitable for post-loading intracavitary treatment, characterized in that: include: Needle adjuster body and interpolation needle; The needle adjuster body comprises an empty cylinder and a piston bolt located in the empty cylinder, a piston shaft is fixed to the rear end of the piston bolt, the rear end of the piston shaft extends out of the empty cylinder, and the interpolation needle is detachably fixed to the front end of the piston bolt.

2. The needle adjusting device for post-loading intracavitary treatment according to claim 1, characterized in that: An insertion hole is provided on the front end face of the piston bolt, and a steel sheet is arranged inside the piston bolt and is integrally arranged with the piston bolt. The steel sheet is perpendicular to the axial direction of the piston bolt, and the insertion hole extends backward to the front surface of the steel sheet. The interpolation needle is inserted into the insertion hole and the rear end of the interpolation needle abuts against the front surface of the steel sheet.

3. The needle adjusting device for post-loading intracavitary treatment according to claim 2, characterized in that: The rear end surface of the piston bolt is provided with a recessed groove, and the front end of the piston shaft is embedded and fixed in the recessed groove.

4. The needle adjuster for post-loading intracavitary treatment according to claim 2, characterized in that: The periphery of the piston bolt is wrapped with a layer of rubber, and the outer surface of the rubber contacts the inner wall of the hollow cylinder.

5. The needle adjusting device for post-loading intracavitary treatment according to claim 1, characterized in that: An interpolation needle holder is fixed at a position of the inner wall of the hollow cylinder close to the front end of the hollow cylinder, and a positioning hole for the interpolation needle to pass through is provided on the interpolation needle holder.

6. The needle adjusting device for post-loading intracavitary treatment according to claim 5, characterized in that: The interpolation needle holder is an arc-shaped piece located on one side of the empty cylinder and having a straight side and an arc-shaped side. The arc-shaped side of the arc-shaped piece is fixed to the inner wall of the empty cylinder. The positioning hole is opened beside the straight side of the arc-shaped piece and a notch is formed at the straight side. A gap is formed between the straight side of the arc-shaped piece and the inner wall of the empty cylinder.

7. The needle adjusting device for post-loading intracavitary treatment according to claim 5, characterized in that: The interpolation needle holder is a circular piece, and the outer circumference of the circular piece is fixed to the inner wall of the hollow cylinder.

8. The needle adjuster for post-loading intracavitary treatment according to claim 1, characterized in that: The open diameters at the front and rear ends of the hollow cylinder are the same.

9. The needle adjusting device for post-loading intracavitary treatment according to claim 1, characterized in that: The empty cylinder is a transparent cylinder, and the side wall of the empty cylinder is provided with millimeter scale lines distributed at intervals along the length direction of the empty cylinder.

10. The needle adjusting device for post-loading intracavitary treatment according to claim 1, characterized in that: A piston handle is fixed to the rear end of the piston shaft, and an empty cylinder handle is fixed to the outer periphery of the rear end of the empty cylinder.

Images