Whole body fixed vacuum negative pressure bag assembly

Abstract

The utility model relates to a whole body fixing vacuum negative pressure bag assembly which comprises a negative pressure bag, a fixing strip and a cylindrical pin. The back face of the negative pressure bag is of a double-layer structure and comprises an inner layer and an outer layer, the inner layer and the front face of the negative pressure bag are of an integrated structure, and through holes are formed in the outer layer. The fixing strips and the fixing pins are arranged on the outer layer of the negative pressure bag, and the cylindrical pins penetrate through the through holes to be connected with an external fixing frame; the fixing strip is connected with the cylindrical pin in a matched mode, and the negative pressure bag is fixed to an external fixing frame. The tail end of the negative pressure bag is provided with an air extraction opening, and the air extraction opening is used for extracting air in the negative pressure bag, so that the negative pressure bag plays a role in fixing. Compared with the prior art, the integrated whole-body vacuum negative pressure bag can be shaped and positioned according to the outline of a patient, is high in stability and good in repeatability, and greatly solves the problems that a vacuum negative pressure bag in a traditional fixing mode is unstable in connecting position, prone to positioning bias and poor in repeatability.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a whole-body fixation vacuum negative pressure bag assembly. Background Art

[0002] Total marrow irradiation and total lymph node irradiation are new radiotherapy techniques that protect the normal tissues of patients on the basis of traditional two-dimensional whole-body irradiation and only irradiate the total marrow or total lymph node regions. On the basis of traditional whole-body irradiation, it can further accurately irradiate the whole body marrow and lymph node regions while protecting normal tissues, greatly reducing the adverse reactions of patients while ensuring the curative effect. During the implementation of accurate radiotherapy such as total marrow and total lymph node radiotherapy, body position fixation and body position stability are the key factors determining the success or failure of radiotherapy. Since this technology has been developed relatively late and has limitations, there is no special fixation device for this treatment method on the market at present. Clinically, existing fixation devices are used in combination, and the effect is not ideal, which has become a pain point that needs to be solved clinically.

[0003] In total marrow or total lymph node radiotherapy, the traditional fixation mold used is a two-section vacuum negative pressure bag, that is, two vacuum negative pressure bags are used for overall fixation and fixed with a thermoplastic film. This solution has the following disadvantages: 1. Due to the width limitation of the vacuum bag, the fixation effect of the hand is poor and the repeatability is poor; 2. It is necessary to separately manufacture two vacuum negative pressure bags, which takes a long time and has high requirements for the tolerance of patients; 3. The stability of the connection between the two vacuum negative pressure bags is poor, affecting the repeatability of positioning; 4. Since the connection of the vacuum negative pressure bags is often not flat, it is easy to affect the comfort of patients during treatment and it is difficult to maintain the same body position for a long time to cooperate with treatment, resulting in overall errors and unable to meet the clinical needs.

[0004] Therefore, exploring a brand-new fixation device dedicated to total marrow, total lymph node, total skin or other whole-body irradiation methods has become an urgent problem to be solved in current clinical work. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the defects of the above-mentioned existing technologies and provide a whole-body fixation vacuum negative pressure bag assembly. By providing multiple groups of fixing strips for rigid positioning and fixation on the back of the vacuum negative pressure bag, it is ensured that the vacuum negative pressure bag can be installed at the same position every time the patient receives treatment, thereby ensuring the consistency of the patient's body position.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] The utility model provides a whole-body fixation vacuum negative pressure bag assembly, including a negative pressure bag, fixing strips and cylindrical pins;

[0008] The back of the negative pressure bag is a double-layer structure, including an inner layer and an outer layer. The inner layer and the front of the negative pressure bag are of an integral structure, and through holes are provided on the outer layer;

[0009] The fixing strip and the fixing pin are both arranged on the outer layer of the negative pressure bag. The cylindrical pin passes through the through hole and is connected to an external fixing frame; the fixing strip is cooperatively connected with the cylindrical pin to fix the negative pressure bag on the external fixing frame;

[0010] An air extraction port is provided at the end of the negative pressure bag. The air extraction port is used to extract the air in the negative pressure bag so that the negative pressure bag plays a fixing role.

[0011] Further, the negative pressure bag includes a head, a middle part, and legs. The width of the middle part is greater than the width of the legs, and the width of the legs is greater than the width of the head;

[0012] The edge of the middle part includes a first bending part, a second bending part, a third bending part, and a fourth bending part connected in sequence. The first bending part, the second bending part, the third bending part, and the fourth bending part are all symmetrically arranged.

[0013] Further, the air extraction port is connected to an external air extraction pump through a pipeline.

[0014] Further, there are two fixing strips, and the two fixing strips are arranged in parallel on the legs of the negative pressure bag body.

[0015] Further, the cylindrical pin is fixedly connected to a positioning hole on the external fixing frame.

[0016] Further, the length of the negative pressure bag is 1800 - 2400 mm; preferably, the length of the negative pressure bag is 2210 mm.

[0017] Further, the width of the head of the negative pressure bag is 250 - 400 mm; preferably, the width of the head of the negative pressure bag is 321 mm.

[0018] Further, the width between the two third bending parts is 560 - 760 mm; preferably, the width between the two third bending parts is 660 mm.

[0019] Further, the width of the legs of the negative pressure bag is 430 - 630 mm; preferably, the width of the legs of the negative pressure bag is 530 mm.

[0020] Further, the included angle between the first bending part and the head of the negative pressure bag is 100° - 150°; preferably, the included angle between the first bending part and the head of the negative pressure bag is 122°.

[0021] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0022] 1. The integrated full-body vacuum negative pressure bag in the present utility model can be shaped and positioned according to the contour of the patient, with high stability and good repeatability, greatly improving the problems of unstable connections at the joints of the vacuum negative pressure bag in the traditional fixing method, prone to displacement deviation and poor repeatability.

[0023] 2. A plurality of fixing strips for rigid positioning and fixing are provided on the back of the negative pressure bag in the present utility model, ensuring that the negative pressure bag can be installed at the same position every time the patient receives treatment, thereby ensuring the consistency of the patient's body position. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of a full-body fixing vacuum negative pressure bag assembly;

[0025] Figure 2 It is a schematic back structure diagram of the vacuum negative pressure bag in Embodiment 1;

[0026] Figure 3 It is a schematic assembly diagram of the vacuum negative pressure bag and the external fixing frame in Embodiment 1;

[0027] Figure 4 For Figure 3 It is an enlarged schematic assembly diagram of the vacuum negative pressure bag and the external fixing frame in

[0028] Figure 5 For Figure 1 It is a schematic structural diagram of the fixing strip and the fixing pin in

[0029] Figure 1 The marking description in

[0030] 1 - Negative pressure bag;

[0031] Figure 2 The marking description in

[0032] 1 - Negative pressure bag, 2 - Fixing strip, 3 - Fixing pin;

[0033] Figure 3 The marking description in

[0034] 1 - Negative pressure bag, 2 - Fixing strip, 3 - Fixing pin;

[0035] Figure 4 The marking description in

[0036] 3 - Fixing pin;

[0037] Figure 5 The marking description in

[0038] 2 - Fixing strip, 3 - Fixing pin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The following is a detailed description of the specific implementation manners of the present utility model through embodiments. These embodiments are implemented on the premise of the solutions described in the present utility model, and detailed implementation manners and specific operation processes are given. However, the protection scope of the present utility model is not limited to the following embodiments.

[0040] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. In the technical solutions of the present utility model, features such as component models, material names, connection structures, preparation means, materials, structures or composition ratios that are not clearly described are regarded as common technical features disclosed in the prior art.

[0041] Embodiment 1

[0042] This embodiment provides a full-body fixed vacuum negative pressure bag 1 assembly, including a negative pressure bag 1, a fixing strip 2 and a cylindrical pin, as Figure 1 and Figure 2 shown. The length of the negative pressure bag 1 is 2210 mm. The back of the negative pressure bag 1 is a double-layer structure, including an inner layer and an outer layer. The inner layer is an integral structure with the front of the negative pressure bag 1, and through holes are provided on the outer layer. The negative pressure bag 1 includes a head, a middle part and legs. The width of the middle part is greater than the width of the legs, and the width of the legs is greater than the width of the head. The width of the head of the negative pressure bag 1 is 321 mm; the width of the legs of the negative pressure bag 1 is 530 mm. The edge of the middle part includes a first bending part, a second bending part, a third bending part and a fourth bending part connected in sequence. The first bending part, the second bending part, the third bending part and the fourth bending part are all symmetrically arranged, and the width between the two third bending parts is 660 mm. The included angle between the first bending part of the negative pressure bag 1 and the head is 122°. The inner side of the fourth bending part is used to fix the palm part.

[0043] As Figures 3 to 5 shown, the fixing strip 2 and the fixing pin 3 are both arranged on the outer layer of the negative pressure bag 1. The cylindrical pin passes through the through hole and is connected to an external fixing frame; the fixing strip 2 is cooperatively connected with the cylindrical pin to fix the negative pressure bag 1 on the external fixing frame.

[0044] An air extraction port is provided at the end of the negative pressure bag 1. The air extraction port is used to extract the air in the negative pressure bag 1 so that the negative pressure bag 1 plays a fixing role. The air extraction port is connected to an external air extraction pump through a pipeline. There are two fixing strips 2, and the two fixing strips 2 are arranged in parallel on the legs of the negative pressure bag 1 body. The cylindrical pin is fixedly connected to the positioning hole on the external fixing frame.

[0045] The specific usage process is as follows: Place the negative pressure bag 1 on the external fixing frame, and then fasten the cylindrical pins on the fixing strip 2 of the negative pressure bag 1 and the cylindrical pins in the middle with the positioning holes on the external fixing frame to complete the installation. After installation, let the patient lie on the negative pressure bag 1, use a vacuum pump to evacuate the gas in the negative pressure bag 1, and at the same time squeeze the negative pressure bag 1 to shape it along the outer contour of the human body to obtain a model. When the negative pressure bag 1 is evacuated to the preset pressure value, the negative pressure bag 1 forms a stable model with the human contour for subsequent radiotherapy, which has high repeatability.

[0046] The integrated whole-body vacuum negative pressure bag 1 in this embodiment can be shaped and positioned according to the contour of the patient, with high stability and good repeatability, greatly improving the problems of unstable connection of the vacuum negative pressure bag 1 in the traditional fixing method, easy occurrence of positioning deviation and poor repeatability. In addition, multiple groups of fixing strips 2 for rigid positioning and fixing are provided on the back of the negative pressure bag 1 to ensure that the negative pressure bag 1 can be installed at the same position every time the patient receives treatment, thereby ensuring the consistency of the patient's body position. The cylindrical pins on the fixing strip 2 are used for fixed installation with the external human body fixing frame to further ensure the stability of the fixing device and no displacement.

[0047] The above description of the embodiments is for the convenience of those of ordinary skill in the art to understand and use the utility model. Obviously, those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative labor. Therefore, the present utility model is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present utility model should be within the protection scope of the present utility model.

Claims

1. A whole-body fixed vacuum negative pressure bag assembly, characterized in that, It includes a negative pressure bag (1), a fixing strip (2) and a cylindrical pin; The back of the negative pressure bag (1) is a double-layer structure, including an inner layer and an outer layer. The inner layer is an integral structure with the front of the negative pressure bag (1), and through holes are provided on the outer layer; The fixing strip (2) and the fixing pin (3) are both arranged on the outer layer of the negative pressure bag (1). The cylindrical pin passes through the through hole and is connected to an external fixing frame; the fixing strip (2) is cooperatively connected with the cylindrical pin, and can fix the negative pressure bag (1) on the external fixing frame; An air extraction port is provided at the end of the negative pressure bag (1), and the air extraction port is used to extract the air in the negative pressure bag (1) to make the negative pressure bag (1) play a fixing role.

2. The whole body fixing vacuum negative pressure bag assembly according to claim 1, characterized in that, The negative pressure bag (1) includes a head, a middle part and legs. The width of the middle part is greater than the width of the legs, and the width of the legs is greater than the width of the head; The edge of the middle part includes a first bending part, a second bending part, a third bending part and a fourth bending part connected in sequence. The first bending part, the second bending part, the third bending part and the fourth bending part are all symmetrically arranged.

3. A whole body fixation vacuum negative pressure bag assembly according to claim 1, characterized in that, The air extraction port is connected to an external air extraction pump through a pipeline.

4. A whole body fixation vacuum negative pressure bag assembly according to claim 1, characterized in that, There are two fixing strips (2), and the two fixing strips (2) are arranged in parallel on the legs of the negative pressure bag (1) body.

5. A whole-body fixed vacuum negative pressure bag assembly according to claim 1, characterized in that, The cylindrical pin is fixedly connected to a positioning hole on the external fixing frame.

6. The whole body fixing vacuum negative pressure bag assembly according to claim 1, characterized in that, The length of the negative pressure bag (1) is 1800 - 2400 mm.

7. A whole-body fixation vacuum negative pressure bag assembly according to claim 1, characterized in that, The width of the head of the negative pressure bag (1) is 250 - 400 mm.

8. A whole-body fixed vacuum negative pressure bag assembly according to claim 2, characterized in that, The width between the two third bending parts is 560 - 760 mm.

9. A whole-body fixed vacuum negative pressure bag assembly according to claim 1, characterized in that, The width of the legs of the negative pressure bag (1) is 430 - 630 mm.

10. A whole-body fixed vacuum negative pressure bag assembly according to claim 2, characterized in that, The included angle between the first bending part and the head of the negative pressure bag (1) body is 100 - 150°.

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