Drug delivery device for medical oncology

Abstract

The invention discloses an administration device for medical oncology, and particularly relates to the field of medical instruments. Comprising an injector, a first pressing plate and a second pressing plate which are arranged in a spaced mode are movably connected to the outside of the injector, first through holes are formed in the centers of the first pressing plate and the second pressing plate, a reset spring is connected between the first pressing plate and the second pressing plate, and a first adjusting screw rod is rotationally connected to the first pressing plate; a supporting plate is in threaded connection with the first adjusting screw rod, a second through hole is formed in the center of the supporting plate, a guide rod is further arranged on the supporting plate in a penetrating mode and fixedly arranged on the first pressing plate, rotating rods are symmetrically arranged on the supporting plate, the rotating rods are rotationally connected to the supporting plate, and expansion plates are arranged at the free ends of the rotating rods; the second pressing plate is further provided with an angle adjusting assembly used for adjusting the rotating angle of the rotating rod. By the adoption of the technical scheme, the problem that an existing drug delivery device cannot provide proper support and expansionary force for tissue is solved, and drug delivery accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a drug delivery device for oncology. Background Art

[0002] In oncology treatment, drug delivery devices are key medical devices whose performance is directly related to the treatment effect and patient comfort. However, oncology drug delivery devices in the prior art have a series of problems, especially in providing accurate support and expansion force.

[0003] Traditional oncology drug delivery devices often rely on manual operation for drug injection, which is not only complicated to operate, but also difficult to ensure the drug delivery effect. During the drug delivery process, because tumor tissue is usually hard and irregular in shape, traditional devices often have difficulty accurately delivering drugs to the target location. This not only affects the treatment effect, but may also cause additional pain to patients due to multiple punctures.

[0004] In addition, existing drug delivery devices are also clearly deficient in providing support and expansion force. The blood vessels and nerve structures inside tumor tissue are complex, and the surrounding tissues need to be properly supported and expanded when administering drugs to ensure that the drugs can be evenly distributed and reduce tissue damage. However, traditional devices usually lack this function, which makes it easy for drugs to leak or accumulate in a certain area during delivery, and they cannot fully exert their therapeutic effects. Summary of the invention

[0005] The present invention is intended to provide a drug delivery device for oncology, which solves the problem that the existing drug delivery devices cannot provide appropriate support and expansion force to tissues.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: A drug delivery device for oncology, comprising a syringe, wherein a first pressing plate and a second pressing plate are movably connected outside the syringe and are spaced apart, a first through hole slidably connected to the outer wall of the syringe is opened in the center of the first pressing plate and the second pressing plate, the size of the first pressing plate and the second pressing plate are both larger than the size of the syringe, a return spring is connected between the first pressing plate and the second pressing plate, a first adjusting screw passing through the second pressing plate is rotatably connected to the first pressing plate, a support plate located below the second pressing plate is threadedly connected to the first adjusting screw, a second through hole for the syringe to pass through is opened in the center of the support plate, a guide rod is also penetrated on the support plate, the guide rod is fixedly arranged on the first pressing plate, rotating rods located on both sides of the syringe are symmetrically arranged on the support plate, the rotating rod is rotatably connected to the support plate, an expansion plate is arranged at the free end of the rotating rod, and an angle adjustment component for adjusting the rotation angle of the rotating rod is also arranged on the second pressing plate.

[0007] Furthermore, the angle adjustment assembly includes a driving rack, which is fixedly arranged at the bottom of the second pressing plate. An opening penetrating the side wall is provided on the support plate, a rotating shaft is rotatably connected in the opening, the rotating rod is arranged on the rotating shaft, and the rotating shaft is covered with a driven gear meshing with the driving rack.

[0008] Through the above-mentioned arrangement, after moving the second pressing plate, the driving rack can be driven to move, thereby driving the rotating shaft and the rotating rod to rotate with the help of the engagement of the driving rack and the driven gear, thereby realizing the adjustment of the rotation angle of the rotating rod, thereby adjusting the size of the expansion plate's support and expansion of the tissue. At the same time, the stability of the support and expansion force is also maintained through the tooth engagement.

[0009] Furthermore, two friction blocks are symmetrically arranged at each of the openings, and the two friction blocks are symmetrically arranged on both sides of the driving rack, and the friction blocks are in conflict with the driving rack.

[0010] Through the above arrangement, the two friction blocks can increase the resistance to the movement of the driving rack, thereby helping to reduce the control difficulty of the doctor and improving the control accuracy.

[0011] Furthermore, the friction block is provided with a second adjusting screw, and the second adjusting screw is threadedly connected to the side wall of the opening.

[0012] Through the above-mentioned setting, the second adjusting screw can be used to control the friction force of the friction block on the driving rack, thereby realizing the control of the resistance of the driving rack, which is conducive to maintaining a stable friction resistance. At the same time, the friction resistance can also be adjusted according to the habits or requirements of different doctors, thereby improving the versatility of this solution.

[0013] Furthermore, the rotating rod is a telescopic rod.

[0014] Through the above arrangement, the length of the rotating rod can be adjusted according to actual needs, which is beneficial to adjusting the size of the tissue expansion of the device and improving the scope of application of the solution.

[0015] Furthermore, sponge pads are provided on opposite sides of the two expansion plates.

[0016] Through the above arrangement, flexible contact with human tissue can be achieved with the help of the sponge pad, avoiding tissue damage caused by hard contact during the process of supporting and expanding the tissue, which is beneficial to reducing or avoiding damage to the tissue.

[0017] Furthermore, a double-sided adhesive tape is provided on the side of the first pressing plate facing away from the second pressing plate, and the double-sided adhesive tape is covered with release paper.

[0018] Through the above arrangement, the first pressing plate and the syringe can be fixed with the help of double-sided adhesive tape, thereby maintaining the reliability of the use of the device.

[0019] Furthermore, the method of using the drug delivery device is as follows: the doctor presses the first pressing plate with the side of the palm close to the fingers, moves the two expansion plates to the tissue that needs support or expansion, and then uses the index finger and middle finger to move the second pressing plate. When the second pressing plate moves, the rotating shaft and the rotating rod are driven to rotate by meshing the teeth of the driving rack and the driven gear. After the position of the second pressing plate is adjusted, the liquid in the syringe can be pushed with the back of the palm or the thumb to complete precise drug delivery.

[0020] Compared with the prior art, this solution has the following beneficial effects:

[0021] 1. This solution provides an oncology drug delivery device, which solves the problem that traditional drug delivery devices cannot provide appropriate support and expansion force to tissues. Doctors can adjust the support and expansion force in real time during the drug delivery process. The adjustment method is simple and convenient, which is conducive to timely adjustment according to actual conditions, and improves the stability and safety of drug delivery.

[0022] 2. This solution further improves the safety of drug administration by flexibly supporting or expanding human tissue. At the same time, the range and angle of support or expansion can be adjusted before or during drug administration, thereby increasing the scope of application of this device.

[0023] 3. The syringe in this solution can adopt a conventional syringe, which is conducive to the standardization of the parts in this device, thereby reducing the manufacturing cost of this device, and can also be used directly with existing syringes, greatly improving the versatility of this solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is an axonometric view of an oncology drug delivery device of the present invention;

[0025] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle;

[0026] Figure 3 It is a front view of an oncology drug delivery device of the present invention. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below through specific embodiments:

[0028] The figure marks in the drawings of the specification include: syringe 1, first pressing plate 2, second pressing plate 3, return spring 4, double-sided tape 5, first adjusting screw 6, third through hole 7, support plate 8, guide rod 9, opening 10, rotating shaft 11, rotating rod 12, expansion plate 13, driving rack 14, driven gear 15, friction block 16, second adjusting screw 17.

[0029] Example

[0030] like Figures 1 to 3 As shown, a drug delivery device for oncology includes a syringe 1. The syringe 1 of this embodiment adopts a conventional syringe 1, which realizes the standardization and substitution of parts, which is conducive to reducing the manufacturing cost of the drug delivery device, thereby reducing the use cost of the patient. The outer wall of the syringe barrel of the syringe 1 is movably connected with a first pressing plate 2 and a second pressing plate 3 arranged at intervals. The first pressing plate 2 and the second pressing plate 3 are arranged in an upper and lower distribution. The centers of the first pressing plate 2 and the second pressing plate 3 are both provided with a first through hole that matches the size of the outer wall of the syringe barrel in the syringe 1. The syringe barrel of the syringe 1 is slidably connected in the first through hole, and at the same time, the syringe 1 can be rotated relative to the first pressing plate 2 and the second pressing plate 3. The sizes of the first pressing plate 2 and the second pressing plate 3 are both larger than the size of the syringe 1, so that it is convenient for the doctor to press or rotate the first pressing plate 2 and the second pressing plate 3. Two return springs 4 are connected between the first pressing plate 2 and the second pressing plate 3, and the two return springs 4 are symmetrically arranged on both sides of the syringe barrel in the syringe 1.

[0031] In this embodiment, a double-sided tape 5 is provided on the upper side of the first pressing plate 2 (i.e., the side facing away from the second pressing plate 3), and the double-sided tape 5 is covered with release paper. When the release paper is peeled off, the first pressing plate 2 can be adhered to the upper side of the syringe barrel of the syringe 1 with the help of the double-sided tape 5, thereby fixing the position of the first pressing plate 2. A first adjusting screw 6 is rotatably connected to the first pressing plate 2, and two third through holes 7 are symmetrically provided on the rear side of the second pressing plate 3. Any of the third through holes 7 is for the first adjusting screw 6 to pass through, and the third through hole 7 does not contact the first adjusting screw 6. A supporting plate 8 located below the second pressing plate 3 is threadedly connected to the first adjusting screw 6, and a first threaded hole threadedly connected to the first adjusting screw 6 is provided at a corresponding portion of the supporting plate 8. During the operation of the drug delivery device, the first adjusting screw 6 will not be completely separated from the first threaded hole; a second through hole for the syringe 1 to pass through is provided in the center of the supporting plate 8, and a guide rod 9 passing through another third through hole 7 is also penetrated on the supporting plate 8, and the guide rod 9 conflicts with the third through hole 7, and the top of the guide rod 9 is fixedly set on the first pressing plate 2.

[0032] The left and right sides of the support plate 8 are provided with openings 10 penetrating the side walls. The inner wall of each opening 10 is rotatably connected with a rotating shaft 11. The rotating shaft 11 is provided with a rotating rod 12. The rotating rod 12 will not interfere with the inner wall of the opening 10 during the rotation process. In this embodiment, the rotating rod 12 adopts a telescopic rod. The support and expansion range can be adjusted by adjusting the length of the rotating rod 12. The lower end of the rotating rod 12 is provided with an expansion plate 13. The opposite sides of the two expansion plates 13 are provided with sponge pads (not shown in the figure). With the help of the sponge pads, flexible support and expansion can be achieved, thereby improving safety. The second pressing plate 3 is also provided with an angle adjustment component for adjusting the rotation angle of the rotating rod 12. The angle adjustment component includes a driving rack 14. The driving rack 14 is fixedly arranged at the bottom of the second pressing plate 3. The rotating shaft 11 is covered with a driven gear 15 meshing with the driving rack 14. The driven gear 15 is arranged at the rear side of the rotating rod 12. Two friction blocks 16 are symmetrically provided at each opening 10, and the two friction blocks 16 are symmetrically arranged on the front and rear sides of the driving rack 14, and the friction blocks 16 are in conflict with the driving rack 14; a second adjusting screw 17 is fixedly connected to one side of the friction block 16, and a second threaded hole is provided on the side wall of the opening 10, and the second adjusting screw 17 is threadedly connected in the second threaded hole. The squeezing force of the friction block 16 on the driving rack 14 can be adjusted by the second adjusting screw 17, thereby realizing the adjustment of the size of the friction resistance, reducing the difficulty of adjusting the rotation angle of the rotating rod 12 and improving its adjustment accuracy.

[0033] The working process of this embodiment:

[0034] The method of using the drug delivery device is as follows: before use, first tear off the release paper on the first pressing plate 2, and adhere the double-sided tape 5 to the upper side of the syringe barrel of the syringe 1, so as to keep the first pressing plate 2 and the syringe 1 connected as a whole. Then, the front end of the doctor's palm (i.e., the side close to the finger) presses against the first pressing plate 2, and at this time, the ring finger can be used for auxiliary clamping and limiting, which is conducive to maintaining the stability of the position of the first pressing plate 2. After moving the two expansion plates 13 to the tissue that needs to be supported or expanded, use the index finger and middle finger to move the second pressing plate 3. When the second pressing plate 3 moves, the teeth of the driving rack 14 and the driven gear 15 are engaged to drive the rotating shaft 11 and the rotating rod 12 to rotate, thereby realizing real-time adjustment of the force of the two expansion plates 13 to support or expand the tissue, which is conducive to improving the accuracy of drug delivery. After the adjustment is completed, the liquid medicine in the syringe 1 can be accurately administered by pushing the medicine in the middle and back side of the palm or the thumb. The friction resistance provided by the friction block 16 to the driving rack 14 is conducive to slowing down or controlling the movement speed of the driving rack 14, thereby realizing the control of the rotation rate of the driven gear 15, the rotating shaft 11 and the rotating rod 12, ensuring the safety of the whole process. After the administration is completed, the elastic force of the reset spring 4 can gradually release the support or expansion force of the tissue, reducing the fatigue of the doctor's hand.

[0035] In the above operation mode, the doctor can complete the medication operation with one hand, and the whole process is simple and efficient. However, in this embodiment, the doctor can also use both hands to operate, that is, one hand applies force to the first pressing plate 2 and the second pressing plate 3 to adjust the position of the second pressing plate 3, and the other hand performs the push injection operation through the piston rod of the syringe 1 after the position adjustment is completed, which is also convenient and fast. The doctor can choose according to the actual situation when administering the medication.

[0036] In this embodiment, according to the site or tissue condition where the drug is to be administered, the first adjusting screw 6 is used to adjust the distance between the second pressing plate 3 and the support plate 8, and the length of the rotating rod 12 is adjusted to achieve the adjustment of the support and expansion range and depth, thereby improving the scope of application of this solution.

[0037] The above are only embodiments of the present invention, and the common knowledge such as the known specific structures and / or characteristics in the scheme are not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A drug delivery device for oncology, characterized in that: The invention comprises a syringe (1), wherein a first pressing plate (2) and a second pressing plate (3) are movably connected to the outside of the syringe (1), wherein the centers of the first pressing plate (2) and the second pressing plate (3) are both provided with a first through hole slidably connected to the outer wall of the syringe (1), the sizes of the first pressing plate (2) and the second pressing plate (3) are both larger than the sizes of the syringe (1), a return spring (4) is connected between the first pressing plate (2) and the second pressing plate (3), and a first adjusting screw (6) passing through the second pressing plate (3) is rotatably connected to the first pressing plate (2), and a thread on the first adjusting screw (6) is provided. A support plate (8) is connected to the lower part of the second pressing plate (3), a second through hole for the syringe (1) to pass through is provided at the center of the support plate (8), a guide rod (9) is also passed through the support plate (8), the guide rod (9) is fixedly arranged on the first pressing plate (2), the support plate (8) is symmetrically provided with rotating rods (12) located on both sides of the syringe (1), the rotating rods (12) are rotatably connected to the support plate (8), an expansion plate (13) is provided at the free end of the rotating rod (12), and the second pressing plate (3) is also provided with an angle adjustment component for adjusting the rotation angle of the rotating rod (12).

2. The oncology drug delivery device according to claim 1, characterized in that: The angle adjustment assembly comprises a driving rack (14), wherein the driving rack (14) is fixedly arranged at the bottom of the second pressing plate (3), the support plate (8) is provided with an opening (10) penetrating the side wall, a rotating shaft (11) is rotatably connected in the opening (10), the rotating rod (12) is arranged on the rotating shaft (11), and the rotating shaft (11) is covered with a driven gear (15) meshing with the driving rack (14).

3. The oncology drug delivery device according to claim 2, characterized in that: Two friction blocks (16) are symmetrically arranged at each opening (10); the two friction blocks (16) are symmetrically arranged on both sides of the driving rack (14), and the friction blocks (16) are in conflict with the driving rack (14).

4. The oncology drug delivery device according to claim 3, characterized in that: The friction block (16) is provided with a second adjusting screw (17), and the second adjusting screw (17) is threadedly connected to the side wall at the opening (10).

5. The oncology drug delivery device according to claim 1, characterized in that: The rotating rod (12) is a telescopic rod.

6. The oncology drug delivery device according to claim 5, characterized in that: Sponge pads are provided on opposite sides of the two expansion plates (13).

7. A drug delivery device for oncology according to any one of claims 1 to 6, characterized in that: A double-sided adhesive tape (5) is provided on the side of the first pressing plate (2) facing away from the second pressing plate (3), and the double-sided adhesive tape (5) is covered with release paper.

8. The oncology medication device according to any one of claims 1 to 6, characterized in that: The method of using the drug delivery device is as follows: the doctor presses the first pressing plate (2) with the side of the palm close to the fingers, moves the two expansion plates (13) to the tissue that needs to be supported or expanded, and then uses the index finger and the middle finger to move the second pressing plate (3). When the second pressing plate (3) moves, the teeth of the driving rack (14) and the driven gear (15) are engaged to drive the rotating shaft (11) and the rotating rod (12) to rotate. After the position of the second pressing plate (3) is adjusted, the drug solution in the syringe (1) is pushed with the back of the palm or the thumb to complete accurate drug delivery.

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