CN102772839A

CN102772839A - Auxiliary injection device of needleless injector

Info

Publication number: CN102772839A
Application number: CN2012102851502A
Authority: CN
Inventors: 王成军; 何涛; 沈豫浙; 杨霞
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2012-08-06
Filing date: 2012-08-06
Publication date: 2012-11-14
Anticipated expiration: 2032-08-06
Also published as: CN102772839B

Abstract

The invention relates to an auxiliary injection device of a needleless injector and relates to the field of needleless injection. The auxiliary injection device is composed of a sliding sleeve, an upper limiting ring, a lower limiting ring, a sleeve, an inner spring, nuts, an outer spring, a sliding bracket and a fastening tape, wherein the sliding sleeve is freely sleeved on the outer wall of the needleles injector; the upper limiting ring and the lower limiting ring are fixedly connected with the outer wall of the needleless injector and located at two ends of the sliding sleeve respectively; the sleeve and the sliding sleeve are connected with each other through threads; the inner spring is freely sleeved on an ampoule of the needleless injector; the two nuts, the outer spring and the sliding bracket are sequentially installed on the sleeve, and the two nuts are screwed on the outer wall of the sleeve through threads; the outer spring is freely sleeved on the sleeve; the sliding bracket is installed on the sleeve through a sliding pair; and a fixed end of the fastening tape is fixed on the sliding bracket. The auxiliary injection device of the needleless injector is simple in structure and capable of effectively tightening skins, fixing injection target sections, reducing wet shooting probabilities, preventing the needleless injector from transversally moving relative to the skins during an injection process and effectively solving technical problems existing during usage of the needleless injector.

Description

The auxiliary injection unit of needleless injector

Technical field:

The present invention relates to the medical apparatus field, relate in particular to a kind of auxiliary injection unit of needleless injector.

Background technology:

Needleless injection has needleless, painless, no cross infection, advantage such as convenient, micro-, efficient, safe, easy to use; Thereby be suitable for patient's (diabetes, chronic hepatitis, tumor patient etc.) of the treatment of automedication for a long time; The patient of probably pin sense and child's painless injection are arranged; And be specially adapted to the diseases prevention and treatment under large-scale conventional prophylactic immunization and the field work condition; The occasions such as health support of vital emergent event (deadly infectious disease, war, natural disaster) can realize " having an injection without pin ".

Needleless injector is widely used at present; But Needleless injection is appointed right some problems that exist in practical operation: the jet of Needleless injection pierces through the pressure of human body skin with relevant by the level of tightness of injector's skin, and it is easier than penetrating lax skin that jet penetrates the skin of tightening; The injection effect of needleless injector is relevant with the gap between ampoule and skin, and ampoule must be close to skin during use, otherwise can cause incomplete injection, promptly causes so-called wet penetrating; There is potential safety hazard in the needleless injector injection, and the mobile meeting of the person causes jet on skin, to cut wound in injection process, causes unnecessary damages.

To some patents of above problem some solutions have been proposed; Like application number is that 200680048220.5 patent has proposed a kind of skin retention device that is used for medical jet injection unit; This holding device can not use with the needleless injector coupling that ampoule is housed; This in addition holding device in use is difficult to guarantee that needleless injector does not produce transverse movement with respect to skin, uses this holding device may cause unnecessary damages.

The auxiliary injection unit of a kind of needleless injector that the present invention relates to; Simple in structure, safe and reliable, effective taught skin; Fixing injection target area; Reducing wets penetrates probability, prevents that needleless injector produces horizontal moving with respect to skin in the injection process, can effectively solve the technical barrier that existing needleless injector in use exists.

Summary of the invention:

Technical problem to be solved by this invention is to provide a kind of auxiliary injection unit of needleless injector.

Technical problem to be solved by this invention adopts following technical scheme to realize.

A kind of auxiliary injection unit of needleless injector is made up of sliding sleeve, upper limit ring, lower limit ring, sleeve, inner spring, nut, outer spring, travelling carriage and magic tape.Wherein, described sliding sleeve sky is enclosed within on the outer wall of needleless injector; The outer wall of upper limit ring and lower limit ring and needleless injector is connected, and lays respectively at the two ends of sliding sleeve; Sleeve is connected through screw thread with sliding sleeve; The inner spring sky is enclosed within on the ampoule of needleless injector; Two nuts, outer spring and travelling carriages are installed on the sleeve successively, and two nuts are screwed on the telescopic outer wall through screw thread; The outer spring sky is enclosed within on the sleeve; Travelling carriage is installed on the sleeve through the slippage pair; The stiff end of magic tape is fixed on the travelling carriage.

Described telescopic end is provided with retainer ring, above retainer ring, is provided with back-up ring, and has two symmetric chutes in telescopic middle and upper part, is provided with female thread and external screw thread in telescopic upper end.The lower surface of described retainer ring is used for fixing the injection target area, and makes the skin of injection target area, and the upper surface of retainer ring is used for the lower end of inner spring is carried out spacing, and the upper end of inner spring is carried out spacing through ampoule; Back-up ring is used for carrying out spacing to the lower end of travelling carriage; Two chutes are used for the slip of travelling carriage is led; Female thread on the sleeve is connected with screw thread on the sliding sleeve; Two nuts are connected with external screw thread on the sleeve.

The upper end of described travelling carriage is provided with two symmetric long waist shaped holes; Be provided with two symmetric elastic tension sheets in the lower end of travelling carriage; And on the inwall of travelling carriage, be provided with two symmetric feather keys, the elastic tension sheet is used for taught skin, and the long waist shaped hole is used to connect magic tape; Feather key places in the chute on the sleeve, and feather key can slide along chute.

Described upper limit ring and lower limit ring are respectively applied for the moving range of restriction sliding sleeve; Two nuts are used for carrying out spacing to the upper end of outer spring; Can be through two positions of nut on sleeve of adjusting, the pretightning force of regulating outer spring, the lower end of outer spring is carried out spacing through travelling carriage.

The invention has the beneficial effects as follows: the present invention is taught skin effectively; Fixing injection target area; Reduce the wet probability of penetrating; Avoid in injection process, causing incised wound, can effectively solve the technical barrier that existing needleless injector in use exists because of needleless injector produces laterally to move with respect to skin.

Description of drawings:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is user mode figure of the present invention;

Fig. 3 is a telescopic structural representation of the present invention;

Fig. 4 is the structural representation of travelling carriage of the present invention;

Fig. 5 is the structural representation of sliding sleeve of the present invention.

Among the figure: 1. sliding sleeve; 2. upper limit ring; 3. lower limit ring; 4. sleeve; 5. inner spring; 6. nut; 7. outer spring; 8. travelling carriage; 9. magic tape; 10. needleless injector; 11. trigger; 12. ampoule; 13. hands arm; 14. skin; 101. screw thread; 401. retainer ring; 402. back-up ring; 403. chute; 404. female thread; 405. external screw thread; 406. upper surface; 407. lower surface; 801. long waist shaped hole; 802. elastic tension sheet; 803. feather key; 901. floss face; 902. hook face.

The specific embodiment:

Below in conjunction with specific embodiment and diagram, further set forth the present invention.

As depicted in figs. 1 and 2, a kind of auxiliary injection unit of needleless injector is made up of sliding sleeve 1, upper limit ring 2, lower limit ring 3, sleeve 4, inner spring 5, nut 6, outer spring 7, travelling carriage 8 and magic tape 9.Wherein: described sliding sleeve 1 sky is enclosed within on the outer wall of needleless injector 10; Upper limit ring 2 is connected with the outer wall of lower limit ring 3 with needleless injector 10, and lays respectively at the two ends of sliding sleeve 1; Sleeve 4 and sliding sleeve 1 are connected through screw thread; Inner spring 5 skies are enclosed within on the ampoule 12 of needleless injector 10; Two nuts 6, outer spring 7 and travelling carriages 8 are installed on the sleeve 4 successively, and two nuts 6 are screwed on the outer wall of sleeve 4 through screw thread; Outer spring 7 skies are enclosed within on the sleeve 4; Travelling carriage 8 is installed on the sleeve 4 through the slippage pair; The stiff end of magic tape 9 is fixed on the travelling carriage 8.

Like Fig. 1, Fig. 3, Fig. 4 and shown in Figure 5; The end of described sleeve 4 is provided with retainer ring 401; Above retainer ring 401, be provided with back-up ring 402, and have two symmetric chutes 403, be provided with female thread 404 and external screw thread 405 in the upper end of sleeve 4 in the middle and upper part of sleeve 4.The lower surface 407 of described retainer ring 401 is used for fixing the injection target area, and makes skin 14 protuberances of injection target area, and the upper surface 406 of retainer ring 401 is used for the lower end of inner spring 5 is carried out spacing, and the upper end of inner spring 5 is carried out spacing through ampoule 12; Back-up ring 402 is used for carrying out spacing to the lower end of travelling carriage 8; Two chutes 403 are used for the slip of travelling carriage 8 is led; Female thread 404 on the sleeve 4 is connected with screw thread 101 on the sliding sleeve 1; Two nuts 6 are connected with external screw thread 405 on the sleeve 4.

Like Fig. 1, Fig. 2 and shown in Figure 4; The upper end of described travelling carriage 8 is provided with two symmetric long waist shaped holes 801, is provided with two symmetric elastic tension sheets 802 in the lower end of travelling carriage 8, and on the inwall of travelling carriage 8, is provided with two symmetric feather keys 803; Elastic tension sheet 802 is used for taught skin 14; Long waist shaped hole 801 is used to connect magic tape 9, and feather key 803 places in the chute 403 on the sleeve 4, and feather key 803 can slide along chute 403.

Like Fig. 1 and shown in Figure 5; Described upper limit ring 2 is respectively applied for the moving range that limits sliding sleeve 1 with lower limit ring 3; Two nuts 6 are used for carrying out spacing to the upper end of outer spring 7; Can be through two positions of nut 6 on sleeve 4 of adjusting, the pretightning force of regulating outer spring 7, the lower end of outer spring 7 is carried out spacing through travelling carriage 8.

During use; The inside that should earlier the ampoule of having got medicine 12 be inserted needleless injector 10 then is connected sleeve 4 on the screw thread 101 of sliding sleeve 1, grasps needleless injector 10; Two elastic tension sheets 802 are attached on the surface of skin 14; To pressing down needleless injector 10, outer spring 7 receives force compresses with inner spring 5 again, thereby makes two elastic tension sheets 802 be pressed on the surface of skin 14 and taught skin 14.Meanwhile, the lower surface 407 of the retainer ring 401 of sleeve 4 also is pressed on the surface of skin 14, thereby the injection target area of a fixing circle makes skin 14 protuberances in the injection target area.Continue to press down needleless injector 10 then, withstand upper limit ring 2 until sliding sleeve 1, this moment, skin 14 just was close on the top of ampoule 12; Keep annotating the invariant position of needleless love dart 10, press trigger 11 and can accomplish injection process with respect to skin 14.

When needs use needleless injector 10 to inject in arm 13 (or shank) position; For stable injectable process better; It is laterally mobile to prevent that needleless injector 10 from producing with respect to skin 14 in injection process, can magic tape 9 be wrapped on the arm 13 (or shank), and the free end with magic tape 9 passes another long waist shaped hole 801 on the travelling carriage 8 again; Its hook face 902 is sticked on its matte 901, thus needleless injector 10 is fixing.When skin is pressed in the lower surface 407 of retainer ring 401; Can be through the space of 802 of two elastic tension sheets; Whether the position that press the lower surface 407 of range estimation retainer ring 401 is the injection target area; If departing from the injection target area, the position of pressing to do suitably adjustment to the position of retainer ring 401, so that fixing better injection target area.

More than show and described ultimate principle of the present invention and principal character; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the description just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.

Claims

1. the auxiliary injection unit of a needleless injector is made up of sliding sleeve, upper limit ring, lower limit ring, sleeve, inner spring, nut, outer spring, travelling carriage and magic tape, it is characterized in that: described sliding sleeve sky is enclosed within on the outer wall of needleless injector; The outer wall of upper limit ring and lower limit ring and needleless injector is connected, and lays respectively at the two ends of sliding sleeve; Sleeve is connected through screw thread with sliding sleeve; The inner spring sky is enclosed within on the ampoule of needleless injector; Two nuts, outer spring and travelling carriages are installed on the sleeve successively, and two nuts are screwed on the telescopic outer wall through screw thread; The outer spring sky is enclosed within on the sleeve; Travelling carriage is installed on the sleeve through the slippage pair; The stiff end of magic tape is fixed on the travelling carriage.

2. the auxiliary injection unit of a kind of needleless injector according to claim 1; It is characterized in that: described telescopic end is provided with retainer ring; Above retainer ring, be provided with back-up ring, have two symmetric chutes in telescopic middle and upper part, be provided with female thread and external screw thread in telescopic upper end.

3. the auxiliary injection unit of a kind of needleless injector according to claim 1; It is characterized in that: the upper end of described travelling carriage is provided with two symmetric long waist shaped holes; Be provided with two symmetric elastic tension sheets in the lower end of travelling carriage, and on the inwall of travelling carriage, be provided with two symmetric feather keys.