Pelvic cavity positioning device for examination and treatment

Abstract

The utility model discloses a pelvic cavity positioning device for examination and treatment, which comprises a bottom plate, a prostrating pad, an L-shaped clamping plate and a positioning body membrane with thermoplastic performance, the prostrating pad is arranged on the bottom plate, a pressing plate for pressing the positioning body membrane is arranged on the L-shaped clamping plate, and a slice for cutting the positioning body membrane in a sliding manner is arranged on the pressing plate; a clamping assembly is arranged on the bottom plate in a sliding mode. By arranging the L-shaped clamping plates and the pressing plate with the sliding cutting function, after the clamping assembly is clamped on the bottom plate, one end of a winding drum type thermoplastic positioning body film is pressed on one L-shaped clamping plate, and the positioning body film is pulled to stretch across the pelvic cavity of a patient so that the positioning body film can be pressed by the pressing plate on the other L-shaped clamping plate; the positioning body film is cut by sliding the slice of the pressing plate, so that the cross length of the positioning body film is rapidly cut and fixed, pelvic cavity parts of patients with different body types are conveniently positioned, and the pelvic cavity CT scanning and accelerator treatment efficiency of the patients is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a pelvic positioning device for examination and treatment. Background Art

[0002] When undergoing pelvic CT scanning or accelerator treatment, patients are generally required to lie prone on a scanning mat and maintain a fixed posture to facilitate movement of the patient into the CT scanner for pelvic scanning and into the accelerator for radiotherapy. To improve the efficiency of treatment and scanning, the patient's pelvis generally needs to be positioned. For example, publication number CN216963332U discloses a supine position fixation device for pelvic radiotherapy, comprising a support plate, an inner wall of which is provided with an adjustment hole, a fixing belt fixedly mounted in the middle of the support plate, a fixing clip fixedly mounted on the outer wall of the fixing belt on the right side, and a protrusion fixedly mounted on the outer wall of the fixing belt. In this supine fixation device for pelvic radiotherapy, the patient lies on a support board with their legs spread outward in an "eight" position. Medical personnel cover the patient's body with a thermoplastic film and adjust the position of the leg separator and adjustment holes according to the patient's body size. Once adjusted to the appropriate position, the thermoplastic film is clipped onto the left and right fixing straps and the leg separator by fixing the plastic strips to fix the patient's device, thereby achieving patient fixation. The use of the above-mentioned fixation device can effectively ensure good repeatability of the patient's pelvic position, greatly improving the treatment effect and reducing the side effects of radiotherapy. However, due to the different sizes of patients, the thermoplastic film cannot be quickly selected according to the patient's body size when in use. Therefore, the present application proposes a pelvic positioning device that can be quickly selected and cut to length according to the patient's body size. Utility Model Content

[0003] The present application proposes a pelvic positioning device for examination and treatment to solve the problem that the thermoplastic film of the above-mentioned pelvic fixation device has different sizes for patients of different body shapes, making it impossible to quickly select the length of the thermoplastic film across the pelvis according to the patient's body shape when using it.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: a pelvic positioning device for examination and treatment, comprising a base plate, a prone pad, an L-shaped splint and a positioning body membrane with thermoplastic properties, the prone pad is arranged on the base plate, the L-shaped splint is provided with a pressure plate for pressing the positioning body membrane, and the pressure plate is provided with a slice for slidingly cutting the positioning body membrane; a clamping assembly is slidably provided on the base plate, and the clamping assembly includes a U-shaped piece for clamping the L-shaped splint; the U-shaped piece clamps the L-shaped splints located on both sides of the prone pad, so that the positioning body membrane connected to the L-shaped splint spans the person to be examined lying prone on the prone pad, so as to perform pelvic thermoplastic positioning of the person to be examined for CT scanning.

[0005] Preferably, the positioning body membrane is clamped between the L-shaped clamp and the pressure plate by a pre-tightening nut; a limiting slide rail is provided on the pressure plate, a slider is provided on the limiting slide rail, and the slice is fixed on one side of the slider; a cutting groove is provided on the pressure plate, and the cutting slide of the slice is located in the cutting groove.

[0006] Preferably, a rectangular opening is provided at the lower portion of the pressing plate, and a rectangular groove is provided at the lower portion of the cutting groove on the pressing plate, the rectangular groove being connected to the rectangular opening.

[0007] Preferably, the clamping assembly further comprises a moving block and a tightening nut. The moving block is slidably disposed within a limiting slot on the base plate. A screw is vertically disposed on the moving block. The U-shaped member is sleeved on the screw, and the tightening nut is threadedly connected to the screw. Limiting bars are disposed on both sides of the U-shaped member, and the limiting bars are slidably engaged with the limiting slots on both sides of the moving block.

[0008] Preferably, the prone mat is provided with strip grooves for placing the legs.

[0009] Preferably, one end of the pressing plate is rotatably connected to one end of the L-shaped clamping plate, and the other end of the pressing plate is connected to the other end of the L-shaped clamping plate through a pre-tightening nut. A rotating pressing portion is provided in the middle of the pressing plate.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] The utility model provides an L-shaped splint and a pressure plate with a sliding cutting function, so that after the L-shaped splint is clamped on the base plate by the clamping assembly, one end of the rolled thermoplastic positioning body membrane can be pressed on one L-shaped splint, and the positioning body membrane can be pulled across the patient's pelvis so that it can be pressed by the pressure plate on the other L-shaped splint. The slicing of the sliding pressure plate can cut the positioning body membrane, thereby realizing rapid cutting and fixing of the span length of the positioning body membrane, so as to facilitate the positioning of the pelvic area of ​​patients with different body shapes, thereby improving the efficiency of pelvic CT scanning and accelerator treatment of patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 This is a schematic diagram of a pelvic positioning device for examination and treatment according to the present invention.

[0014] Figure 2 This is an axial view of a pelvic positioning device for examination and treatment according to the present invention.

[0015] Figure 3 For this utility model Figure 1 A local enlarged schematic diagram;

[0016] Figure 4 For this utility model Figure 1 B is a partial enlarged schematic diagram;

[0017] Figure 5 For this utility model Figure 4 A partial enlarged schematic diagram of C;

[0018] Figure 6 This is a schematic diagram of the hinge connection between the pressure plate and the L-shaped clamping plate of the present invention.

[0019] In the figure: 1-base plate; 11-limiting slide; 2-prone pad; 21-strip groove; 3-L-shaped splint; 31-pre-tightening nut; 4-positioning body membrane; 5-pressure plate; 51-limiting slide rail; 52-slider; 53-cutting groove; 54-rectangular opening; 6-slice; 7-clamping assembly; 71-U-shaped part; 72-moving block; 73-tightening nut; 74-screw; 75-limiting strip. DETAILED DESCRIPTION

[0020] In order to make it easier to understand the structure of the present invention and the functional features and advantages that can be achieved, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings:

[0021] Example:

[0022] like Figures 1 to 5 As shown, the utility model provides a pelvic positioning device for examination and treatment, including a base plate 1, a prone pad 2, an L-shaped splint 3 and a positioning body membrane 4 with thermoplastic properties, the prone pad 2 is arranged on the base plate 1, and the L-shaped splint 3 is provided with a pressure plate 5 for pressing the positioning body membrane 4, and the pressure plate 5 is provided with a slice 6 for slidingly cutting the positioning body membrane 4; a clamping assembly 7 is slidably provided on the base plate 1, and the clamping assembly 7 includes a U-shaped part 71 for clamping the L-shaped splint 3; the U-shaped part 71 clamps the L-shaped splints 3 located on both sides of the prone pad 2, so that the positioning body membrane 4 connected to the L-shaped splint 3 spans the person to be examined who is lying prone on the prone pad 2, so as to perform pelvic thermoplastic positioning on the person to be examined for CT scanning.

[0023] See also Figure 5The positioning body film 4 of the present application is clamped between the L-shaped clamping plate 3 and the pressure plate 5 by a pre-tightening nut 31; a limiting slide rail 51 is provided on the pressure plate 5, and a slider 52 is slidably provided on the limiting slide rail 51, and the slice 6 is fixed on one side of the slider 52; a cutting groove 53 is provided on the pressure plate 5, and the cutting slide of the slice 6 is located in the cutting groove 53, so that the slice 6 is moved in the cutting groove 53 by sliding the slider 52 to cut the positioning body film 4 pressed between the pressure plate 5 and the L-shaped clamping plate 3. The slice 6 of the present application is a cutting knife with a triangular blade to facilitate sliding cutting. The cutter of the present application is set in one of the pressure plates 5 to facilitate cutting the length stretched from the positioning body film 4 of the roll structure.

[0024] See also Figure 5 The lower portion of the pressing plate 5 of the present application is provided with a rectangular opening 54. A rectangular groove is provided on the pressing plate 5 below the cutting groove 53. The rectangular groove is connected to the rectangular opening 54 so that the cut positioning membrane 4 roll can be taken out. That is, the positioning membrane 4 of the present application is mainly in the form of a roll. The positioning membrane 4 is stretched across the patient's pelvic cavity to select its use length, and then cut to position and fix the compressed length. The rectangular groove allows the cut positioning membrane 4 to be pulled out through the rectangular opening 54.

[0025] See also Figure 3 and Figure 4 The clamping assembly 7 of the present application also includes a moving block 72 and a tightening nut 73. The moving block 72 is slidably arranged in the limiting slide groove 11 of the base plate 1. A screw 74 is vertically provided on the moving block 72. The U-shaped part 71 is sleeved on the screw 74. The tightening nut 73 is threadedly connected to the screw 74 so that the U-shaped part 71 can be pressed tightly against the L-shaped pressure plate 5 by rotating the tightening nut 73.

[0026] See also Figure 3 The U-shaped member 71 of the present application is provided with limit bars 75 on both sides, and the limit bars 75 are slidably plugged into the limit grooves on both sides of the moving block 72 so that the U-shaped member 71 can slide on the moving block 72 without rotating.

[0027] See also Figure 1 The prone mat 2 of the present application is provided with a strip groove 21 for placing the legs, so as to facilitate the placement of the patient's legs.

[0028] See also Figure 6 One end of the pressure plate 5 of the present application is rotatably connected to one end of the L-shaped clamp 3, and the other end of the pressure plate 5 is connected to the other end of the L-shaped clamp 3 through a pre-tightening nut 31, so as to realize the rapid opening of the pressure plate 5 and clamp the positioning body membrane 4 therein by setting a hinged pressure plate 5; further, the pre-tightening nut 31 of the present application is connected to the stud on the L-shaped clamp 3 to press the pressure plate 5 onto the L-shaped clamp 3.

[0029] See also Figure 3 The middle part of the pressing plate 5 of the present application is provided with a rotating pressing part, so as to perform secondary pressing on the pressed positioning body film 4 by rotating the selective pressing part.

[0030] The working principle of the present application is as follows: when in use, the patient to be examined lies prone on the prone mat 2, and one end of the positioning membrane 4 is pressed against one of the L-shaped splints 3 by the pressure plate 5, and the clamping assembly 7 is used to press the one L-shaped splint 3 against the base plate 1; then, the positioning membrane 4 is pulled across the patient's pelvic cavity so that it is attached to the pelvic area, the pressure plate 5 on the other L-shaped splint 3 is opened to press the positioning membrane 4 against the other L-shaped splint 3, the pre-tightening nut 31 is rotated to tighten and fix the positioning membrane 4, the slice 6 on the sliding pressure plate 5 is made to slide in the cutting groove 53 to cut the positioning membrane 4, and then a hair dryer or a hot air blower is used to heat the positioning membrane 4 so that it is thermoformed to fit the patient's pelvic cavity and thigh area, so as to locate the pelvis of the patient to be examined. The pelvic positioning device of the present application is suitable for radiotherapy and CT scanning of prone patients, and is also suitable for radiotherapy and CT scanning of supine patients.

[0031] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any person skilled in the art can utilize the above technical content to make many possible changes and modifications to the present invention without departing from the scope of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any changes, modifications, equivalent changes, and modifications made to the above embodiments based on the technology of the present invention that do not depart from the content of the present invention are within the scope of protection of the present invention.

Claims

1. A pelvic positioning device for examination and treatment, characterized in that: The invention comprises a base plate (1), a prone pad (2), an L-shaped splint (3) and a positioning body film (4) with thermoplastic properties, wherein the prone pad (2) is arranged on the base plate (1), the L-shaped splint (3) is provided with a pressing plate (5) for pressing the positioning body film (4), and the pressing plate (5) is provided with a slice (6) for slidingly cutting the positioning body film (4); a clamping assembly (7) is slidably provided on the base plate (1), and the clamping assembly (7) comprises a U-shaped member (71) for clamping the L-shaped splint (3); the U-shaped member (71) clamps the L-shaped splints (3) located on both sides of the prone pad (2), so that the positioning body film (4) connected to the L-shaped splint (3) is straddled over the patient lying prone on the prone pad (2) to perform pelvic thermoplastic positioning.

2. A pelvic positioning device for examination and treatment as claimed in claim 1, characterized in that: The positioning body membrane (4) is clamped between the L-shaped clamping plate (3) and the pressing plate (5) by means of a pre-tightening nut (31); a limiting slide rail (51) is provided on the pressing plate (5), a sliding block (52) is slidably provided on the limiting slide rail (51), and the slice (6) is fixedly arranged on one side of the sliding block (52); a cutting groove (53) is provided on the pressing plate (5), and the cutting sliding of the slice (6) is located in the cutting groove (53).

3. A pelvic positioning device for examination and treatment as claimed in claim 2, characterized in that: A rectangular opening (54) is provided at the lower portion of the pressing plate (5).

4. A pelvic positioning device for examination and treatment as claimed in claim 3, characterized in that: A rectangular groove is provided on the inner wall of the pressing plate (5) at the lower part of the cutting groove (53), and the rectangular groove is communicated with the rectangular opening (54).

5. A pelvic positioning device for examination and treatment as claimed in claim 1, characterized in that: The clamping assembly (7) further comprises a moving block (72) and a tightening nut (73); the moving block (72) is slidably disposed in a limiting sliding groove (11) of the base plate (1); a screw rod (74) is vertically disposed on the moving block (72); the U-shaped member (71) is sleeved on the screw rod (74); and the tightening nut (73) is threadedly connected to the screw rod (74).

6. A pelvic positioning device for examination and treatment as claimed in claim 1, characterized in that: The prone mat (2) is provided with strip-shaped grooves (21) for placing the legs.

7. A pelvic positioning device for examination and treatment as claimed in claim 2, characterized in that: One end of the pressing plate (5) is rotatably connected to one end of the L-shaped clamping plate (3), and the other end of the pressing plate (5) is connected to the other end of the L-shaped clamping plate (3) via the pre-tightening nut (31).

8. A pelvic positioning device for examination and treatment as claimed in claim 7, characterized in that: A rotating pressing portion is provided in the middle of the pressing plate (5).

9. A pelvic positioning device for examination and treatment as claimed in claim 5, characterized in that: Limiting strips (75) are arranged on both sides of the U-shaped piece (71), and the limiting strips (75) are slidably plugged into limiting grooves on both sides of the moving block (72).

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