Disposable CT (Computed Tomography) positioning puncture angle guider

Abstract

The utility model discloses a disposable CT (Computed Tomography) positioning puncture angle guiding device which comprises a positioning head frame which is of an arc-shaped structure, the guiding module is used for conducting angle guiding on the puncture needle, the limiting module is used for conducting guiding and limiting on the puncture needle, the mounting module is used for providing mounting support for the positioning head frame, the guiding module is assembled on one side of the middle of the positioning head frame, and the limiting module is arranged on the inner side of the guiding module; the positioning device has the advantages that the structure is simple, the guiding module is arranged, the puncture angle of the puncture needle can be accurately guided, and therefore the puncture position and the midline angle can be accurately judged to avoid the brain function area and the conventional blood vessel distribution position; the guiding module is of a split mounting type structural design, post-operation dismounting and maintaining work is facilitated, the limiting module is arranged, the limiting module is made of disposable medical materials, the limiting module is directly abandoned after being used and does not need to be repeatedly used, and the disinfection time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of CT puncture, in particular to a disposable CT positioning puncture angle guide. Background Art

[0002] In the prior art, CT puncture is a technique for performing puncture biopsy on lesions under the guidance of CT scanning positioning. CT puncture is widely used in many clinical departments. The sites of puncture biopsy include multiple tissues and organs such as the brain, liver, gallbladder, pancreas, spleen, kidney, and thyroid gland. The existing puncture angle guide generally uses a flat template structure or a 3D printed template structure to guide the puncture, wherein a plurality of puncture holes are provided on the flat template structure, and the puncture needle is inserted into the lesion area through the puncture holes. Since the flat template structure is a flat shape, when guiding the puncture, the puncture needle can only be inserted vertically into the lesion area, and the angle of the guide tube cannot be adjusted, and the length of the drill bit and the puncture needle cannot be recorded. In addition, during the puncture process, the doctor uses his hands to grasp the direction of the needle insertion based on his medical skills and experience. Since the puncture angle and puncture depth cannot be determined during the needle insertion, and the difference in medical skills and experience makes it difficult to accurately puncture the correct site at one time, resulting in repeated needle adjustment and repeated CT scanning verification. This inaccurate puncture process directly increases the patient's pain and prolongs the operation time.

[0003] The Chinese utility model patent with application number: 202021420527.7 discloses a CT positioning puncture angle guide, including an angle adjustment mechanism and a needle clamping mechanism. The angle adjustment mechanism includes a main rod, a movable rod and a connecting rod. The movable rod is inserted in the main rod, and the movable rod is rotatably connected to one end of the needle clamping mechanism through the connecting rod. The other end of the needle clamping mechanism is rotatably connected to one end of the main rod. A sliding column is connected to the movable rod, and a sliding groove is provided on the main rod. The sliding column can slide along the sliding groove. However, the puncture part of this type of CT positioning puncture angle guide has a relatively complex structure, and requires high operating accuracy. The coordination between the various components is relatively complex, which is not convenient for postoperative disassembly and maintenance. Moreover, it is made of metal material as a whole, and needs to be thoroughly disinfected after use before it can be used again. It cannot be used quickly and conveniently for a second time, and there is also a risk of incomplete disinfection. Utility Model Content

[0004] The utility model aims to provide a disposable CT positioning puncture angle guide.

[0005] In order to achieve the above purpose, the technical solution proposed by the utility model is:

[0006] A disposable CT positioning puncture angle guide comprises a positioning head frame, which is configured as an arc-shaped structure, and also comprises a guiding module for angle guiding a puncture needle, a limiting module for guiding and limiting the puncture needle, and an installation module for providing installation support for the positioning head frame, wherein the guiding module is assembled on one side of the middle portion of the positioning head frame, the limiting module is arranged on the inner side of the guiding module, and the installation module is arranged at the end of the positioning head frame.

[0007] The guiding module includes a guiding support rod, a guiding base and a guiding base block. The guiding support rod is assembled at the middle part of one side of the positioning head frame via a supporting assembly. The guiding base is arranged on the side of the guiding support rod away from the supporting assembly and is fixedly connected to the guiding support rod by screws. The guiding base block is arranged at one end of the guiding support rod away from the supporting assembly and is fixedly connected to the guiding support rod. The guiding base block is arranged opposite to the guiding base with a spacing between them.

[0008] It also includes a scale, which is arranged at one end of the guide base away from the guide support rod and fixedly connected to the guide base, and the scale and the guide support rod are arranged parallel to each other.

[0009] The support assembly includes a support base and a support bolt. The support base is arranged in the middle of one side of the positioning head frame and is sleeved with the positioning head frame. The guide support rod is arranged on one side of the support base and is fixedly connected with the support base. There are two groups of support bolts. The two groups of support bolts are symmetrically arranged on the side of the support base and penetrate the support base and are threadedly connected to the support base. The support bolts abut against the positioning head frame.

[0010] The limit module includes a limit mounting block, a limit support block and a guide assembly. The limit mounting block is arranged in the middle of the guide base and plugged with the guide base, the limit support block is arranged in the middle of the guide base block and plugged with the guide base block, the limit mounting block and the limit support block are provided with insertion holes corresponding to the guide assembly, and the guide assembly is assembled on the inner side of the limit mounting block and the limit support block.

[0011] The guide assembly includes a guide needle tube and a guide cam. The guide needle tube is arranged on the inner side of the limit mounting block and the limit support block and is plugged into the limit mounting block and the limit support block. One end of the guide needle tube protrudes from the guide base. The guide cam is arranged on the end of the guide needle tube protruding from the guide base and is fixedly connected to the guide needle tube. The guide needle tube and the guide cam are provided with guide through holes corresponding to the puncture needle.

[0012] It also includes an angle mark, which is arranged on a side of the guide cam away from the guide needle tube. The limit mounting block, the limit support block, the guide needle tube and the guide cam are all made of disposable medical materials.

[0013] The limiting support block is composed of two support blocks arranged opposite to each other, and guide grooves are provided on the opposite sides of the two support blocks. The two guide grooves are assembled to form a guide through hole on the inner side of the limiting support block. The two support blocks are assembled with each other to form an assembled support structure, and the lower part of the guide needle tube is located in the guide groove between the two support blocks.

[0014] The mounting module includes mounting rods, mounting brackets and mounting support beams, wherein the mounting rods are provided with two groups, the two groups of mounting rods are symmetrically arranged at the two ends of the positioning head frame and are fixedly connected to the positioning head frame by screws, the mounting brackets are provided with two groups, the two groups of mounting brackets are respectively arranged at one end of the two groups of mounting rods that are opposite to each other and are fixedly connected to the corresponding mounting rods, and the mounting support beam is arranged between the two groups of mounting brackets and its two ends are respectively fixedly connected to the two groups of mounting support beams.

[0015] It also includes mounting claws, which are provided with two groups. The two groups of mounting claws are symmetrically arranged on one side of the mounting support beam and are rotatably connected to the mounting support beam. An adjusting screw rod is provided between the two groups of mounting claws.

[0016] The beneficial effects of the utility model are:

[0017] The structure is simple and is equipped with a guiding module, which can accurately guide the puncture angle of the puncture needle, so as to accurately determine the puncture position and the midline angle to avoid the brain functional area and the conventional blood vessel distribution position. The guiding module adopts an assembled structure design, which is convenient for postoperative disassembly and maintenance. It is equipped with a limiting module, which is made of disposable medical materials and is directly discarded after use without reuse, saving disinfection time. It is equipped with an installation module, which can provide stable installation support for the positioning head frame to ensure the working stability of the guiding module and the limiting module. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the guide module of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the guide assembly of the utility model;

[0021] Figure 4 This is a schematic diagram of the cooperation between the angle scale and the guide cam of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the limiting support block of the first embodiment of the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the position-limiting support block of the second embodiment of the utility model;

[0024] Figure 7 It is a schematic diagram of the structure of the limiting support block of the third embodiment of the utility model.

[0025] In the figure: 1. Positioning head frame; 2. Guide support rod; 3. Guide base; 4. Guide base block; 5. Scale; 6. Support base; 7. Support bolt; 8. Limit mounting block; 9. Limit support block; 10. Guide needle tube; 11. Guide cam; 12. Angle scale line; 13. Mounting support rod; 14. Mounting bracket; 15. Mounting support beam; 16. Mounting claw. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] Embodiment 1:

[0028] A disposable CT positioning puncture angle guide comprises a positioning head frame 1, which is arranged in an arc-shaped structure, and further comprises a guiding module for guiding the puncture needle at an angle, a limiting module for guiding and limiting the puncture needle, and an installation module for providing installation support for the positioning head frame 1. The guiding module is assembled on one side of the middle part of the positioning head frame 1, the limiting module is arranged on the inner side of the guiding module, and the installation module is arranged at the end of the positioning head frame 1. The overall structural schematic diagram of the utility model is shown in FIG. Figure 1 shown.

[0029] The guiding module comprises a guiding support rod 2, a guiding base 3 and a guiding base block 4. The guiding support rod 2 is assembled on the middle part of one side of the positioning head frame 1 via a supporting assembly. The guiding base 3 is arranged on the side of the guiding support rod 2 away from the supporting assembly and is fixedly connected to the guiding support rod 2 by screws. The guiding base block 4 is arranged at one end of the guiding support rod 2 away from the supporting assembly and is fixedly connected to the guiding support rod 2. The guiding base block 4 and the guiding base 3 are arranged opposite to each other and a distance is left between the two. The guiding module cooperates with the guiding support rod 2, the guiding base 3 and the guiding base block 4 as a mounting structure on the positioning head frame 1, thereby providing mounting support for the limiting module to form a puncture angle guiding structure of the puncture needle, wherein the guiding support rod 2 is used to provide mounting support for the guiding base 3, the guiding base 3 is used to provide mounting support for the scale 5 and the limiting mounting block 8, and the guiding base block 4 is used to form a segmented mounting structure together with the guiding base 3 and provide mounting support for the limiting support block 9. The structural schematic diagram of the guiding module of the utility model is shown in Figure 2 shown.

[0030] It also includes a scale 5, which is arranged at one end of the guide base 3 away from the guide support rod 2 and is fixedly connected to the guide base 3. The scale 5 and the guide support rod 2 are arranged parallel to each other, wherein the scale 5 is convenient for the operator to control the puncture depth.

[0031] The support assembly includes a support base 6 and a support bolt 7. The support base 6 is arranged in the middle of one side of the positioning head frame 1 and is sleeved with the positioning head frame 1. The guide support rod 2 is arranged on one side of the support base 6 and is fixedly connected with the support base 6. There are two groups of support bolts 7. The two groups of support bolts 7 are symmetrically arranged on the side of the support base 6 and penetrate the support base 6 and are threadedly connected with the support base 6. The support bolts 7 abut against the positioning head frame 1. The support assembly cooperates with the support base 6 and the support bolts 7 to provide installation support for the guide support rod 2 and assemble the guide support rod 2 to the positioning head frame 1. The support base 6 is used to provide installation support for the guide support rod 2 and assemble the guide support rod 2 to the positioning head frame 1. The support bolts 7 are used to achieve relative positioning between the support base 6 and the positioning head frame 1. The relative position between the support base 6 and the positioning head frame 1 can be adjusted and the support bolts 7 can be rotated so that the support bolts 7 abut against the positioning head frame 1 to achieve relative positioning between the support base 6 and the positioning head frame 1.

[0032] The limit module includes a limit mounting block 8, a limit support block 9 and a guide assembly. The limit mounting block 8 is arranged in the middle of the guide base 3 and plugged with the guide base 3. The limit support block 9 is arranged in the middle of the guide base block 4 and plugged with the guide base block 4. The limit mounting block 8 and the limit support block 9 are provided with insertion holes corresponding to the guide assembly. The guide assembly is assembled on the inner side of the limit mounting block 8 and the limit support block 9. The limit module cooperates with the limit mounting block 8, the limit support block 9 and the guide assembly to provide a limit guide for the puncture needle. Among them, the limit mounting block 8 is used to provide a limit support for the guide assembly. The limit support block 9 is used to form a segmented support structure together with the limit mounting block 8, thereby providing installation support for the guide assembly. The guide assembly is used to provide a limit guide for the puncture needle.

[0033] The guide assembly includes a guide needle tube 10 and a guide cam 11. The guide needle tube 10 is arranged on the inner side of the limit mounting block 8 and the limit support block 9 and is plugged with the limit mounting block 8 and the limit support block 9. One end of the guide needle tube 10 protrudes from the guide base 3. The guide cam 11 is arranged at one end of the guide needle tube 10 protruding from the guide base 3 and is fixedly connected to the guide needle tube 10. The guide needle tube 10 and the guide cam 11 are provided with guide through holes corresponding to the puncture needle. The guide assembly cooperates with the guide needle tube 10 and the guide cam 11 to limit and guide the puncture needle. The guide needle tube 10 is used to provide a limit guide for the puncture needle, and the guide cam 11 is used to adjust the guide angle of the guide needle tube 10. The structural schematic diagram of the guide assembly of the utility model is shown as follows Figure 3 shown.

[0034] The utility model also includes an angle scale 12, which is arranged on the side of the guide cam 11 away from the guide needle tube 10. The limit mounting block 8, the limit support block 9, the guide needle tube 10 and the guide cam 11 are all made of disposable medical materials. The angle scale 12 is used as an angle measurement table on the guide cam 11. The guide angle of the guide cam 11 can be adjusted according to the angle scale 12, so as to determine the puncture position and the midline angle, thereby avoiding the brain functional area and the conventional blood vessel distribution position. The schematic diagram of the angle scale of the utility model and the guide cam 11 is shown in Figure 4 shown.

[0035] The limiting support block 9 is composed of two relatively arranged support blocks, and a guide groove is provided on the opposite side of the two support blocks. The two guide grooves are assembled to form a guide through hole on the inner side of the limiting support block 9. The two support blocks are assembled with each other to form an assembled support structure. The lower part of the guide needle tube 10 is located in the guide groove between the two support blocks. The limiting support block 9 composed of the two relatively arranged support blocks can be disassembled and assembled, which is convenient for removing the guide assembly, and can avoid the limiting support block 9 from being squeezed and deformed, resulting in the phenomenon that the guide assembly is stuck. The schematic diagram of the structure of the limiting support block 9 in the first embodiment of the utility model is shown as follows Figure 5 shown.

[0036] The mounting module includes a mounting rod 13, a mounting bracket 14 and a mounting support beam 15. The mounting rod 13 is provided with two groups, and the two groups of mounting rods 13 are symmetrically arranged at the two ends of the positioning head frame 1 and are fixedly connected to the positioning head frame 1 by screws. The mounting bracket 14 is provided with two groups, and the two groups of mounting brackets 14 are respectively arranged at one end of the two groups of mounting rods 13 that are opposite to each other and are fixedly connected to the corresponding mounting rods 13. The mounting support beam 15 is arranged between the two groups of mounting brackets 14 and its two ends are respectively fixedly connected to the two groups of mounting support beams 15. The mounting module cooperates with the mounting rod 13, the mounting bracket 14 and the mounting support beam 15 to provide mounting support for the positioning head frame 1, wherein the mounting rod 13 is used as a mounting structure at the end of the positioning head frame 1, thereby providing mounting support for the mounting bracket 14, the mounting bracket 14 is used to form a mounting structure together with the mounting rod 13, thereby providing mounting support for the mounting support beam 15, and the mounting support beam 15 is used to form a mounting structure together with the mounting bracket 14 and the mounting rod 13 to realize the installation connection between the positioning head frame 1 and the medical bed.

[0037] It also includes mounting claws 16, which are provided with two groups. The two groups of mounting claws 16 are symmetrically arranged on one side of the mounting support beam 15 and are rotatably connected to the mounting support beam 15. An adjusting screw is provided between the two groups of mounting claws 16, wherein the mounting claws 16 are used as a connecting structure on the mounting module, and the mounting module can be installed and connected to the medical bed through the mounting claws 16, thereby realizing the installation connection between the positioning head frame 1 and the medical bed.

[0038] Among them, in this technical solution, the disposable medical material is a disposable plastic material that meets medical standards.

[0039] Embodiment 2:

[0040] On the basis of the first embodiment, the limit support block 9 is replaced by an assembled support structure formed by two groups of support blocks buckled together, and the rest of the parts remain unchanged, that is, the connection between the two groups of support blocks is mutually engaged through the card block and the card slot to realize the assembly of the limit support block 9, thereby improving the installation stability of the limit support block 9. The schematic diagram of the structure of the limit support block 9 of the second embodiment of the utility model is shown in FIG. Figure 6 shown.

[0041] Among them, different structures of the clamping structures can be used to replace the clamping structures between the two groups of support blocks according to actual use requirements to meet the stability requirements of the limiting support block 9.

[0042] Embodiment three:

[0043] On the basis of the second embodiment, a limit block is added to the upper end of one group of support blocks, and the rest of the parts remain unchanged. In the assembled state, the limit block overlaps the upper end of the other group of support blocks, so as to ensure that in the assembled state, the limit block can realize the radial and axial bidirectional limit between the two groups of support blocks. The schematic diagram of the limit support block structure of the third embodiment of the utility model is shown in FIG. Figure 7 shown.

[0044] Working principle:

[0045] During use, the positioning head frame 1 is installed on the medical bed through the installation module, and is installed on the positioning head frame 1 through the supporting assembly. When a puncture operation is required on the patient, the disposable limit mounting block 8, the limit support block 9, the guide needle tube 10 and the guide cam 11 are installed on the guide module, and then the puncture needle is installed on the inner side of the guide needle tube 10, and the puncture operation can be performed on the patient. During the puncture operation, the puncture depth can be observed by the scale 5, and the puncture angle can be observed by the angle scale line 12. After the puncture is completed, the limit mounting block 8, the limit support block 9, the guide needle tube 10 and the guide cam 11 are removed from the guide module and discarded. The assembled limit support block 9 can be disassembled to prevent it from getting stuck with the guide needle tube 10.

[0046] The beneficial effects of the utility model are that the structure is simple and a guiding module is provided, which can accurately guide the puncture angle of the puncture needle, so as to accurately determine the puncture position and the midline angle to avoid the brain functional area and the conventional blood vessel distribution position, and the guiding module adopts an assembled structure design, which is convenient for postoperative disassembly and maintenance, and is provided with a limiting module, which is made of disposable medical materials and is directly discarded after use without reuse, saving disinfection time, and is provided with an installation module, which can provide a stable installation support for the positioning head frame to ensure the working stability of the guiding module and the limiting module.

[0047] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A disposable CT positioning puncture angle guide, comprising a positioning head frame (1), wherein the positioning head frame (1) is configured as an arc-shaped structure, characterized in that: It also includes a guiding module for angularly guiding the puncture needle, a limiting module for guiding and limiting the puncture needle, and a mounting module for providing mounting support for the positioning head frame (1), wherein the guiding module is assembled on one side of the middle portion of the positioning head frame (1), the limiting module is arranged on the inner side of the guiding module, and the mounting module is arranged at the end of the positioning head frame (1).

2. A disposable CT positioning puncture angle guide as claimed in claim 1, characterized in that: The guide module comprises a guide support rod (2), a guide base (3) and a guide base block (4); the guide support rod (2) is assembled at the middle part of one side of the positioning head frame (1) via a support assembly; the guide base (3) is arranged on a side of the guide support rod (2) away from the support assembly and is fixedly connected to the guide support rod (2) via screws; the guide base block (4) is arranged at one end of the guide support rod (2) away from the support assembly and is fixedly connected to the guide support rod (2); the guide base block (4) and the guide base (3) are arranged opposite to each other and a distance is left between the two.

3. A disposable CT positioning puncture angle guide as claimed in claim 2, characterized in that: It also comprises a scale (5), which is arranged at one end of the guide base (3) away from the guide support rod (2) and is fixedly connected to the guide base (3), and the scale (5) and the guide support rod (2) are arranged parallel to each other.

4. A disposable CT positioning puncture angle guide as claimed in claim 3, characterized in that: The support assembly comprises a support base (6) and a support bolt (7); the support base (6) is arranged at the middle of one side of the positioning head frame (1) and is sleeved with the positioning head frame (1); the guide support rod (2) is arranged at one side of the support base (6) and is fixedly connected with the support base (6); two groups of the support bolts (7) are symmetrically arranged on the side of the support base (6) and penetrate the support base (6) and are threadedly connected with the support base (6); the support bolts (7) are in contact with the positioning head frame (1).

5. A disposable CT positioning puncture angle guide as claimed in claim 4, characterized in that: The limit module comprises a limit installation block (8), a limit support block (9) and a guide assembly, wherein the limit installation block (8) is arranged in the middle of the guide base (3) and plugged into the guide base (3), the limit support block (9) is arranged in the middle of the guide base block (4) and plugged into the guide base block (4), the limit installation block (8) and the limit support block (9) are provided with insertion holes corresponding to the guide assembly, and the guide assembly is assembled on the inner side of the limit installation block (8) and the limit support block (9).

6. A disposable CT positioning puncture angle guide as claimed in claim 5, characterized in that: The guide assembly comprises a guide needle tube (10) and a guide cam (11); the guide needle tube (10) is arranged on the inner side of the limit mounting block (8) and the limit support block (9) and is plugged into the limit mounting block (8) and the limit support block (9); one end of the guide needle tube (10) protrudes from the guide base (3); the guide cam (11) is arranged on one end of the guide needle tube (10) protruding from the guide base (3) and is fixedly connected to the guide needle tube (10); the guide needle tube (10) and the guide cam (11) are provided with guide through holes corresponding to the puncture needle.

7. A disposable CT positioning puncture angle guide as claimed in claim 6, characterized in that: It also includes an angle mark (12), which is arranged on a side of the guide cam (11) away from the guide needle tube (10), and the limit mounting block (8), the limit support block (9), the guide needle tube (10) and the guide cam (11) are all made of disposable medical materials.

8. A disposable CT positioning puncture angle guide as claimed in claim 7, characterized in that: The limiting support block (9) is composed of two support blocks arranged opposite to each other, and guide grooves are provided on opposite sides of the two support blocks. The two guide grooves are assembled to form a guide through hole inside the limiting support block (9). The two support blocks are assembled to form an assembled support structure, and the lower part of the guide needle tube (10) is located in the guide groove between the two support blocks.

9. A disposable CT positioning puncture angle guide as claimed in claim 8, characterized in that: The mounting module comprises a mounting support rod (13), a mounting bracket (14) and a mounting support beam (15); the mounting support rod (13) is provided with two groups, the two groups of mounting support rods (13) are symmetrically arranged at the two ends of the positioning head frame (1) and are fixedly connected to the positioning head frame (1) by screws; the mounting bracket (14) is provided with two groups, the two groups of mounting brackets (14) are respectively arranged at one end of the two groups of mounting support rods (13) which are arranged opposite to each other and are fixedly connected to the corresponding mounting support rods (13); the mounting support beam (15) is arranged between the two groups of mounting brackets (14) and its two ends are respectively fixedly connected to the two groups of mounting support beams (15).

10. A disposable CT positioning puncture angle guide as claimed in claim 9, characterized in that: It also includes mounting claws (16), wherein the mounting claws (16) are provided in two groups, the two groups of mounting claws (16) are symmetrically arranged on one side of the mounting support beam (15) and are rotatably connected to the mounting support beam (15), and an adjusting screw rod is provided between the two groups of mounting claws (16).

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