Applicator accessory

Abstract

The utility model discloses an applicator accessory which comprises a protection disc, the protection disc is arranged on the side, away from an application source window, of an application source back, and a through hole is formed in the position, corresponding to a threaded hole in the application source back, of the protection disc; one end of the first screw penetrates through the through hole and the threaded hole and then is connected with the application source back, the other end of the first screw is provided with a first internal thread connector in the axial direction, and an internal thread through hole is formed in the middle of the first screw in the radial direction in a penetrating mode. One end of the second screw rod is connected with the internal thread interface or the internal thread through hole so as to realize transverse or longitudinal installation of the second screw rod and the first screw rod, and the other end of the second screw rod is provided with a second internal thread interface along the axial direction of the second screw rod; one end of the third screw is connected with the second internal thread connector, and the other end of the third screw is a screw tail. The application source is simple in structure and convenient to assemble, radiation injury to medical staff in the clinical treatment process can be effectively reduced, safety is improved, and clinical application of the application source in the nuclear medicine department is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear medicine, in particular to an applicator accessory. Background Art

[0002] In the field of clinical nuclear medicine, strontium-90 applicators are widely used in the treatment of tumors and other diseases as an effective radiotherapy device. However, the only radioactive source currently imported into China is the patch source 1, which is usually a square structure source of 30mm×30mm×9mm. The square structure source includes a patch source back 1-1 and a patch source window 1-2 arranged on one side of the patch source back 1-1. The patch source window 1-2 is used to place the radioactive source. The patch source back 1-1 is away from the patch source window 1-2 on one side. A threaded hole 1-11 (such as Figure 1 shown).

[0003] However, when using strontium-90 applicators, clinical nuclear medicine departments usually need to combine applicator sources and auxiliary accessories to achieve precise treatment of lesions; however, imported radioactive sources do not include accessories and cannot be directly used by clinical nuclear medicine departments, and cannot meet the treatment needs of clinical nuclear medicine departments. Therefore, there is an urgent need for an applicator accessory to meet the clinical nuclear medicine department's needs for the use of applicator sources. Utility Model Content

[0004] In view of the deficiencies existing in the prior art, the utility model provides an applicator accessory.

[0005] The utility model discloses an applicator accessory, comprising:

[0006] A protective plate, the protective plate is placed on a side of the back of the dressing source away from the dressing source window, and a through hole is provided on the protective plate at a position corresponding to the threaded hole on the back of the dressing source;

[0007] A first screw, one end of which passes through the through hole and the threaded hole and is connected to the back of the dressing source, the other end of the first screw is provided with a first internal thread interface along its axial direction, and the middle part of the first screw is provided with an internal thread through hole along its radial direction;

[0008] A second screw, one end of which is connected to the first internal thread interface or the internal thread through hole to achieve transverse or longitudinal assembly of the second screw with the first screw, and the other end of the second screw is provided with a second internal thread interface along its axial direction;

[0009] A third screw, one end of which is connected to the second internal thread interface, and the other end of which constitutes a screw tail.

[0010] As a further improvement of the present invention, the shape of the protection plate includes a circle or a square, and the material of the protection plate includes an acrylic material or a lead rubber;

[0011] The diameter of the protective plate is greater than the diameter of the application source, and the through hole is provided at the center position of the protective plate corresponding to the position of the threaded hole.

[0012] As a further improvement of the utility model, the first screw comprises a protective plate fixing portion and a screw connecting portion with a circular cross section;

[0013] The protective plate is sleeved on the protective plate fixing portion, and one end of the protective plate fixing portion close to the back of the application source is provided with a first threaded head that matches the threaded hole, and the other end of the protective plate fixing portion is connected to one end of the screw connecting portion;

[0014] The other end of the screw connecting part is provided with the first internal thread interface, the middle part of the screw connecting part is provided with the internal thread through hole, and the outer surface of the screw connecting part is also provided with an embossed structure.

[0015] As a further improvement of the present invention, the length of the protective plate fixing portion is consistent with the thickness of the protective plate, and the diameter of the protective plate fixing portion is matched with the aperture of the through hole of the protective plate;

[0016] The diameter of the first thread head is adapted to the aperture of the threaded hole;

[0017] The inner diameters of the internal thread through hole, the first internal thread interface and the second internal thread interface are consistent.

[0018] As a further improvement of the present invention, the material of the first screw includes stainless steel or titanium.

[0019] As a further improvement of the present invention, one end of the second screw is provided with a second thread head, and the other end of the second screw is provided with the second internal thread interface;

[0020] An embossing structure is also provided on the outer surface of one end of the second screw rod provided with the second internal thread interface.

[0021] As a further improvement of the present invention, the diameter of the second thread head is matched with the inner diameter of the first internal thread interface and the inner diameter of the internal thread through hole.

[0022] As a further improvement of the present invention, the number of the second screw rods provided is not less than one;

[0023] When multiple second screws are connected, the second thread head of the second screw at the front end is connected to the first internal thread interface, and multiple second screws at the rear end are sequentially connected to the second internal thread interface of the second screw at the front end.

[0024] As a further improvement of the utility model, one end of the third screw is provided with a third thread head, the other end of the third screw constitutes a screw tail, and the outer surface of the screw tail is also provided with an embossed structure;

[0025] The diameter of the third thread head is matched with the inner diameter of the second internal thread interface.

[0026] As a further improvement of the present invention, the second screw and the third screw are both made of aluminum alloy, titanium metal or hard plastic;

[0027] The hard plastic includes acrylic, polytetrafluoroethylene, PVC or PET.

[0028] Compared with the prior art, the beneficial effects of the utility model are:

[0029] The utility model has a simple structure and is easy to assemble. By providing a protective plate and the first screw rod, the second screw rod and the third screw rod that are screwed together, the radiation damage to medical staff during clinical treatment can be effectively reduced, thereby improving their safety. At the same time, through the internal thread through hole on the first screw rod and the first internal thread interface, the horizontal and vertical assembly of the first screw rod and the second screw rod can be realized, thereby meeting the use requirements of the clinical applicator. At the same time, by increasing the number of second screw rods, the length of the entire applicator accessory can also be extended, thereby better protecting medical staff.

[0030] The utility model adopts a screw assembly method, which can realize arbitrary adjustment and assembly of the second screw, the third screw and the first screw, and can be applied to different protection requirements, while also facilitating the use and maintenance of the applicator accessories. At the same time, the screw assembly method also ensures the stability of the applicator accessories during the treatment process to a certain extent;

[0031] The utility model can increase friction resistance by arranging embossing structures on the first screw, the second screw and the third screw, so as to better complete the assembly and disassembly of the first screw, the second screw and the third screw, and is convenient for clinical application in nuclear medicine. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of an application source in the prior art;

[0033] Figure 2 It is a structural schematic diagram of the transverse assembly of the applicator accessory disclosed in one embodiment of the utility model;

[0034] Figure 3 A schematic diagram of the longitudinal assembly structure of an applicator accessory disclosed in an embodiment of the utility model

[0035] Figure 4 It is a schematic structural diagram of a first screw rod of an applicator accessory disclosed in an embodiment of the utility model;

[0036] Figure 5 It is a schematic diagram of the structure of the second screw rod of the applicator accessory disclosed in one embodiment of the utility model;

[0037] Figure 6 The present invention is a schematic structural diagram of a third screw rod of an applicator accessory disclosed in an embodiment of the present invention.

[0038] In the figure:

[0039] 1. Application source; 1-1. Application source back; 1-11. Threaded hole; 1-2. Application source window; 2. First screw; 2-1. Protective plate fixing part; 2-2. Screw connecting part; 2-21. First internal thread interface; 2-22. Internal thread through hole; 2-3. First thread head; 3. Second screw; 3-1. First screw body; 3-11. Second thread head; 3-12. Second internal thread interface; 4. Third screw; 4-1. Second screw body; 4-11. Third thread head; 4-12. Screw tail; 5. Protective plate; 5-1. Through hole; 6. Embossed structure. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0044] like Figure 2-3 As shown, an applicator accessory provided by the utility model includes a protective plate 5, a first screw 2, a second screw 3, and a third screw 4, wherein the protective plate 5 is placed on the side of the application source back 1-1 away from the application source window 1-2, and a through hole 5-1 is provided on the protective plate 5 corresponding to the threaded hole 1-11 on the application source back 1-1; one end of the first screw 2 passes through the through hole 5-1 and the threaded hole 1-11 and is connected to the application source back 1-1, the other end of the first screw 2 is provided with a first internal threaded interface 2-21 along its axial direction, and an internal threaded through hole 2-22 is provided in the middle part of the first screw 2 along its radial direction; one end of the second screw 3 is connected to the internal threaded interface 2-22 or the internal threaded through hole 2-21 to realize the transverse or longitudinal assembly of the second screw 3 and the first screw 2, and the other end of the second screw 3 is provided with a second internal threaded interface 3-12 along its axial direction.

[0045] In this embodiment, by providing a protective plate 5 and a first screw 2, a second screw 3, and a third screw 4 that are screwed together, the radiation damage to medical staff during clinical treatment can be effectively reduced, thereby improving their safety. At the same time, through the internal threaded through hole 2-22 and the first internal threaded interface 2-21 on the first screw 2, the lateral and longitudinal assembly with the second screw 3 can be achieved to meet the clinical use requirements of the applicator. At the same time, by increasing the number of second screws 3, the length of the entire applicator accessory can also be extended to better protect medical staff.

[0046] Specific:

[0047] like Figure 2-3 As shown, in the above embodiment, preferably, the shape of the protective plate 5 includes a circle or a square, the material of the protective plate 5 includes an acrylic material or a lead rubber, and a through hole 5-1 is provided at the center position of the protective plate 5 corresponding to the position of the threaded hole 1-11. The setting of the protective plate 5 in this embodiment can effectively play a role in unnecessary radiation of the back rays of the application source, and reduce the radiation damage to medical staff.

[0048] In the above embodiment, preferably, the diameter of the protective plate 5 is larger than the diameter of the application source 1, and specifically, the diameter of the protective plate 5 is larger than the diameter of the application source back 1-1.

[0049] In the above embodiment, preferably, the protection plate 5 is preferably a lead rubber with a thickness of 2 mm.

[0050] like Figure 4 As shown, in the above embodiment, preferably, the first screw 2 includes a protective plate fixing portion 2-1 with a circular cross-section and a screw connecting portion 2-2; wherein the protective plate 5 is sleeved on the protective plate fixing portion 2-1, and the end of the protective plate fixing portion 2-1 close to the application source back 1-1 is provided with a first threaded head 2-3 that cooperates with the threaded hole 1-11, and the other end of the protective plate fixing portion 2-1 is connected to one end of the screw connecting portion 2-2; the other end of the screw connecting portion 2-2 is provided with a first internal thread interface 2-21, and the middle part of the screw connecting portion 2-2 is provided with an internal threaded through hole 2-22, and an embossed structure 6 is also provided on the outer surface of the screw connecting portion 2-2.

[0051] In the above embodiment, preferably, the length of the protective plate fixing portion 2-1 is consistent with the thickness of the protective plate 5, the diameter of the protective plate fixing portion 2-1 is adapted to the aperture of the through hole 5-1 of the protective plate 5; the diameter of the first threaded head 2-3 is adapted to the aperture of the threaded hole 1-11; the inner diameters of the internal threaded through hole 2-22, the first internal threaded interface 2-21 and the second internal threaded interface 3-12 are consistent. In this embodiment, the diameter of the protective plate fixing portion 2-1 is 4mm, the diameter of the screw connecting portion 2-2 is 5mm, the specification of the first internal threaded interface 2-21 is M4, and the length of the first screw 2 is 2-5cm.

[0052] In the above embodiment, preferably, the material of the first screw 2 includes stainless steel or titanium, which can effectively increase the hardness of the connection between the first screw 2 and the back of the application source to avoid wear of the connection, especially the application source 1.

[0053] During actual installation, the first threaded head 2-3 of the first screw 2 passes through the through hole 5-1 on the protective plate 5 and is screwed into the threaded hole 1-11 of the application source back 1-1. At this time, the protective plate 5 is sleeved on the protective plate fixing part 2-1 and is clamped by the screw connecting part 2-2 and the application source back 1-1 to ensure that the protective plate 5 does not shake left and right.

[0054] like Figure 5 As shown, in the above embodiment, preferably, the second screw 3 includes a first screw body 3-1 with a circular cross-section, a second thread head 3-11 is provided at one end of the first screw body 3-1, and a second internal thread interface 3-12 is provided at the other end; an embossed structure 6 is also provided on the outer surface of the end of the first screw body 3-1 provided with the second internal thread interface 3-12.

[0055] In the above embodiment, preferably, the diameter of the second threaded head 3-11 is matched with the inner diameter of the first internal threaded interface 2-21 and the inner diameter of the internal threaded through hole 2-22.

[0056] In the above embodiment, preferably, the number of second screw rods 3 is not less than 1; when multiple second screw rods 3 are connected, the second thread head 3-11 of the second screw rod 3 at the front end is connected to the first internal thread interface 2-21 or the internal thread through hole 2-22, and the multiple second screw rods 3 at the rear end are sequentially connected to the second internal thread interface 3-12 of the second screw rod 3 at the front end. In this embodiment, by increasing the number of second screw rods 3, the length of the entire applicator accessory can also be extended to better protect medical staff.

[0057] In the above embodiment, preferably, the specification of the second thread head 3 - 11 of the second screw 3 in this embodiment is M4, the diameter of the second screw 3 is 5 mm, and the length of the second screw 3 is 5-20 cm.

[0058] like Figure 6 As shown, in the above embodiment, preferably, the third screw 4 includes a second screw body 4-1, one end of the second screw body 4-1 is provided with a third thread head 4-11, and the other end constitutes a screw tail 4-12, and the outer surface of the screw tail 4-12 is also provided with an embossed structure 6;

[0059] In the above embodiment, preferably, the diameter of the third thread head 4-11 is matched with the inner diameter of the second internal thread interface 3-12.

[0060] In the above embodiment, preferably, the materials of the second screw 3 and the third screw 4 include aluminum alloy, titanium metal or hard plastic; wherein the hard plastic includes acrylic, polytetrafluoroethylene, PVC or PET.

[0061] In the above embodiment, preferably, the specification of the third thread head 4 - 11 of the third screw rod 4 in this embodiment is M4, the diameter of the third screw rod 4 is 5 mm, and the length of the third screw rod 4 is 5-20 cm.

[0062] In the above embodiment, preferably, the third screw 4 in this embodiment can also be directly connected to the first internal thread interface 2-21 or the internal thread through hole 2-22 of the first screw 2 to realize the direct assembly of the third screw 4 and the first screw 2. That is, in this embodiment, by adopting the screw assembly method, the second screw 3, the third screw 4 and the first screw 2 can be arbitrarily adjusted and assembled, which can be suitable for different protection needs, and also facilitates the use and maintenance of the applicator accessories. At the same time, the screw assembly method also ensures the stability of the applicator accessories during the treatment process to a certain extent.

[0063] In the above embodiment, preferably, by providing a threaded second screw 3 and a third screw 4, in actual operation, after the first screw 2 and the patch source 1 are assembled, they can be in a long-term connection state, and only the second screw 3 and the third screw 4 need to be adjusted to complete the adjustment of the applicator accessories, which can reduce permanent damage to the threaded hole 1-11 of the patch source 1 due to repeated disassembly.

[0064] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An applicator accessory, characterized in that: include: A protective plate, the protective plate is placed on a side of the back of the dressing source away from the dressing source window, and a through hole is provided on the protective plate at a position corresponding to the threaded hole on the back of the dressing source; A first screw, one end of which passes through the through hole and the threaded hole and is connected to the back of the dressing source, the other end of the first screw is provided with a first internal thread interface along its axial direction, and the middle part of the first screw is provided with an internal thread through hole along its radial direction; A second screw, one end of which is connected to the first internal thread interface or the internal thread through hole to achieve transverse or longitudinal assembly of the second screw with the first screw, and the other end of the second screw is provided with a second internal thread interface along its axial direction; A third screw, one end of which is connected to the second internal thread interface, and the other end of which constitutes a screw tail.

2. The applicator accessory according to claim 1, characterized in that The shape of the protection plate includes round or square, and the material of the protection plate includes acrylic material or lead rubber; The diameter of the protective plate is greater than the diameter of the application source, and the through hole is provided at the center position of the protective plate corresponding to the position of the threaded hole.

3. The applicator accessory according to claim 1, characterized in that The first screw comprises a protective plate fixing portion and a screw connecting portion with a circular cross section; The protective plate is sleeved on the protective plate fixing portion, and one end of the protective plate fixing portion close to the back of the application source is provided with a first threaded head that matches the threaded hole, and the other end of the protective plate fixing portion is connected to one end of the screw connecting portion; The other end of the screw connecting part is provided with the first internal thread interface, the middle part of the screw connecting part is provided with the internal thread through hole, and the outer surface of the screw connecting part is also provided with an embossed structure.

4. The applicator accessory according to claim 3, characterized in that The length of the protective plate fixing portion is consistent with the thickness of the protective plate, and the diameter of the protective plate fixing portion is adapted to the aperture of the through hole of the protective plate; The diameter of the first thread head is adapted to the aperture of the threaded hole; The inner diameters of the internal thread through hole, the first internal thread interface and the second internal thread interface are consistent.

5. The applicator accessory according to claim 1, characterized in that The material of the first screw rod includes stainless steel or titanium.

6. The applicator accessory according to claim 1, characterized in that One end of the second screw is provided with a second thread head, and the other end of the second screw is provided with the second internal thread interface; An embossing structure is also provided on the outer surface of one end of the second screw rod provided with the second internal thread interface.

7. The applicator accessory according to claim 6, characterized in that The diameter of the second thread head is matched with the inner diameter of the first internal thread interface and the inner diameter of the internal thread through hole.

8. The applicator accessory according to claim 6, characterized in that The number of the second screw is not less than 1; When multiple second screws are connected, the second thread head of the second screw at the front end is connected to the first internal thread interface, and multiple second screws at the rear end are sequentially connected to the second internal thread interface of the second screw at the front end.

9. The applicator accessory according to claim 1, characterized in that One end of the third screw is provided with a third thread head, the other end of the third screw constitutes a screw tail, and the outer surface of the screw tail is also provided with an embossed structure; The diameter of the third thread head is matched with the inner diameter of the second internal thread interface.

10. The applicator accessory according to claim 1, characterized in that The second screw and the third screw are made of aluminum alloy, titanium metal or hard plastic; The hard plastic includes acrylic, polytetrafluoroethylene, PVC or PET.

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