CN202061177U - Hypodermic implantation type drug administration device - Google Patents
Hypodermic implantation type drug administration device Download PDFInfo
- Publication number
- CN202061177U CN202061177U CN201120125839XU CN201120125839U CN202061177U CN 202061177 U CN202061177 U CN 202061177U CN 201120125839X U CN201120125839X U CN 201120125839XU CN 201120125839 U CN201120125839 U CN 201120125839U CN 202061177 U CN202061177 U CN 202061177U
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- injection
- injection tube
- liquid storage
- medicine bag
- catch bar
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Abstract
The utility model discloses a hypodermic implantation type drug administration device, relates to a hypodermic injection device in medical equipment, and overcomes the defects in a conventional hypodermic implantation type drug administration device that liquid medicine is injected in an anther sac by a medical institution or when the liquid medicine is used up, the anther sac is taken out of a body to inject liquid medicine. The drug administration device comprises a housing and an injection pump component arranged in the housing, wherein the injection pump component comprises an injection push rod, a liquid storage anther sac and an injection cylinder; the injection push rod is inserted in the injection cylinder and can slide along the inner wall of the injection cylinder; the liquid storage anther sac is communicated with the injection cylinder; the injection pump component further comprises at least one medicine injection cavity communicated with the liquid storage anther sac; the medicine injection cavity is provided with a liquid medicine injection opening; and the liquid medicine injection opening is positioned outside the housing. Drug required for a long term can be injected in the drug administration device at one time, and a patient controls drug administration manually according to dosage at a time. The drug administration device is used for chemo-treatment administration in treatment of cancer, and is also suitable for administration through in vivo guide in treatment of other diseases.
Description
Technical field
This utility model relates to the hypodermic injection unit in a kind of medical apparatus and instruments, relates in particular to a kind of Endermic implantating doser.
Background technology
The Endermic implantating doser is the new type medical equipment of a kind of formation " drug channel in the human body ", it is used for burying in the body guidance quality zone administration, can provide the repetition passage to selected target tissue or organ, be used for the cancerous area chemotherapy, the medicine of analgesia therapy purpose comes into operation and the treatment of other diseases, make medicine can be directly, be transported to target tissue or organ by this device repeatedly.It can improve tens of times to over one hundred times of the liquor strengths of local organization or organ than conventional vein or intramuscular injection method, and long term compares with vein or intramuscular injection medication administration method in target tissue, can alleviate because the general medication, the untoward reaction that causes can significantly improve therapeutic effect.
Chang Yong doser clinically as the venous transfusion device, mostly is the external doser that is provided with, the mode of veins indwelling catheter, treatment local patholoic change or systemic disease; The perhaps external syringe that is provided with at the epidural space inlying catheter, injects analgesic treatment cancer of late stage pain etc.The shortcoming of treated in vitro device is a complicated operation, and patient's activity is subjected to very big restriction, and conduit comes off easily and the danger of local infection is arranged.
The present situation of the doser of implantation property both at home and abroad product: be divided into disposable perfusion doser and electrodynamic type automatic chemical feeding device two big classes.The former each administration must be injected medicinal liquid to medicine bag to medical institutions; The medicinal liquid that the latter then injects uses up or the electric energy of battery when exhausting, and must carry out dabbling drug again from withdrawing device in the body, uses very inconvenience, and costs an arm and a leg.
Summary of the invention
At the shortcoming of above-mentioned domestic and international existing implantable drug delivery system, but the purpose of this utility model provides life-time service behind a kind of dabbling drug, manually controls by the patient, can be regularly and the Endermic implantating doser of dosed administration.
The technical scheme that its technical problem that solves this utility model adopts is: it comprises housing and is arranged at the intravital syringe pump assembly of described shell, described syringe pump assembly comprises injection catch bar, liquid storage medicine bag and injection tube, described injection catch bar is inserted in the described injection tube and can slides along the injection tube inwall, described liquid storage medicine bag is connected with described injection tube, and described housing is provided with a medicinal liquid inlet that is used for to described liquid storage medicine bag injection medicinal liquid.。
Further, between described medicinal liquid inlet and described liquid storage medicine bag, also be provided with at least one medicine that is connected with described liquid storage medicine bag and described medicinal liquid inlet respectively and inject chamber.
Further, one end of described injection catch bar is connected with injection ram, described injection ram is inserted in the described injection tube and can slides along the injection tube inwall, and the other end of described injection catch bar is positioned at outside the described housing, and the boss on the described injection catch bar contacts with described inner walls.
Further, described syringe pump assembly also comprises the injection tube fixed mount that is used for fixing injection tube, and described injection tube fixed mount is arranged at described enclosure interior central authorities.
Further, described syringe pump assembly also comprises the spring that is sleeved on the described injection catch bar, and described spring is between described boss and described injection tube fixed mount.
Further, described syringe pump assembly also comprises button, and described button is arranged at and is positioned on the outer described injection catch bar of described housing.
Further, the ultimate range of described button pressed downwards equates with the height of described injection tube inner chamber.
Further, described liquid storage medicine bag is made by medical organic silicon rubber material, and described liquid storage medicine bag is enclosed in the described injection catch bar outside, and the cross section of described liquid storage medicine bag in the form of a ring.
Further, second transfusion catheter that described injection tube is connected with described liquid storage medicine bag is provided with the injection tube inlet non-return valve that prevents that medicinal liquid from refluxing, and the connector that described injection tube is connected with described extraneous conduit is provided with the injection tube outlet non-return valve that prevents that medicinal liquid from refluxing.
The effect of this patent is: after doser of the present utility model is implanted subcutaneous tissue, the liquid storage medicine bag is disposable can to pour into the long-term prescription amount, and according to the needs of dosage every day, patient's pressing button is by injection tube liquid medicine injection in target tissue, once push and inject quantitative medicinal liquid, carry out oneself's control medication.When the dose of liquid storage medicine bag is not enough, inject medicinal liquid repeatedly by the medicinal liquid inlet, the inconvenience of the perfusion administration of avoiding frequently going to the hospital.This device can permanent subcutaneous implantation, and the adventitia aseptic of medical organic silicon rubber material is strong, should not leak outside, safe.This apparatus structure is simple, cheap, is easy to carry.This utility model not only can improve the clinical treatment level, the Endermic implantating doser that provides easy to use and had wide range of applications for extensive patients also, particularly, bring into play very big effect to cancer patient's the cancer drug therapy and the pain therapy of patient with advanced cancer.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples;
Fig. 1 is an external structure sketch map of the present utility model;
Fig. 2 is an internal structure sketch map of the present utility model;
Fig. 3 is the structural representation of injection catch bar;
Fig. 4 is the structural representation of injection catch bar and injection tube position relation;
Fig. 5 is the structural representation of injection tube;
Fig. 6 is the structural representation of injection tube and position of valve relation;
Fig. 7 is the structural representation of liquid storage medicine bag;
The number in the figure explanation:
1-housing 2-adventitia 3-syringe pump assembly 4-liquid storage medicine bag
The 5-medicine injects chamber 6-medicinal liquid inlet 7-first transfusion catheter 8-injection catch bar
9-boss 10-spring 11-button 12-injection ram 13-injection tube
The 14-second transfusion catheter 15-medicine liquid outlet 16-injection tube fixed mount
The extraneous conduit 20-of 17-suture hole 18-retainer ring 19-union joint
21-injection tube outlet non-return valve 22-injection tube inlet non-return valve
The specific embodiment
Embodiment one: in conjunction with Fig. 1 to Fig. 7 Endermic implantating doser of the present utility model is described, this doser is made up of housing 1 and the syringe pump assembly 3 that is arranged in the housing 1.Housing 1 is the discus type, and its central authorities are thick, and to periphery attenuation gradually, and the bottom surface is smooth.The both sides of housing 1 outer wall respectively have a suture hole 17 to be used for doser is fixed in subcutis.Housing 1 can be made by polymethyl methacrylate (PMMA resin) macromolecular material.The adventitia of being made by medical organic silica gel 2 sealingly is coated on housing 1 outer surface, and because of silica gel material does not repel with body, it can reduce the injury to subcutis.
The occupation mode of this device is as follows:
One, operative procedure is installed: under aseptic operation, carry out the installation of doser, can be installed in the top of subcutaneous rib through the disinfectant doser.Cut disinfectant skin, separate subcutaneous tissue, form the space of device size, insert doser, utilize stitching thread doser and subcutaneous tissue to be fixed, prevent that doser from moving by suture hole 17.Then, with stitching thread that extraneous conduit 19 is fixing with retainer ring 18, in case extraneous conduit 19 causes medicine liquid leakage because of external force breaks away from union joint 20.The other end of extraneous conduit 19 is implanted the target tissue for the treatment of, and the skin suture operation finishes.
Two, Zhuan Zhi perfusion program: according to doctor's advice and disease course of treatment, configuration and the medicinal liquid of liquid storage medicine bag 4 with capacity, insert the medicinal liquid inlet 6 of projection with the syringe that has syringe needle, in injecting chamber 5, injects medicine quantitative medicinal liquid, medicinal liquid injects chamber 5 by medicine and flows into to liquid storage medicine bag 4 by first transfusion catheter 7, liquid storage medicine bag 4 inner liquid medicines flow in the chamber of injection tube 13 by second transfusion catheter 14, device is furnished with two medicines and injects chamber 5, if a medicine injects chamber 5 and breaks down, can use another one.
Three, treatment sequence: press...with one's finger and press button 11 till can't push, this moment, injection ram 12 closely arrived injection tube 13 bottoms, injection catch bar 8 is by promoting the medicinal liquid that piston 12 promotes in the injection tube 13, inject coupled logical extraneous conduit 19 by medicine liquid outlet 15, and then flow in the target tissue of implanting this conduit.Injection tube inlet non-return valve 22 on second transfusion catheter 14 is closed, and can prevent that the medicinal liquid in the injection tube 13 from refluxing in liquid storage medicine bag 4.
When finger release button 11 pressure relieves, spring 10 bounce-backs on the injection catch bar 8, injection ram 12 is set back, the negative pressure that injection ram 12 pumpbacks produce, can open the injection tube inlet non-return valve 22 of second transfusion catheter, 14 seams that communicate with liquid storage medicine bag 4, make the medicinal liquid in the liquid storage medicine bag 4 flow to injection tube 13, and then be injection tube 13 perfusion solution again.Meanwhile, injection tube 13 is closed with the injection tube outlet non-return valve 21 at extraneous conduit 19 connector places, prevents that the medicinal liquid that flows to target tissue from refluxing.
Liquid storage medicine bag 4 intracavity volumes can reach 10 milliliters, and according to injecting dosage the course of treatment, and injection tube 13 intracavity volumes can be set at the specification of 1 milliliter or 2 milliliters.Injection tube 13 inner liquid medicines can be set at a drug dosage, so the needs of patient's medication every day decision compression number.Also can adjust compression number according to regulating the liquor strength that injects.For example: a week is a course of treatment, medication every day once, the amount of at every turn making up a prescription is set at 7 milliliters by the adjusting of concentration.According to above setting, 7 milliliters medicinal liquid can inject in hospital in liquid storage medicine bag 4.After the patient goes home, push every day once, 1 milliliter of each administration after the week, is carried out perfusion to hospital again.Silica gel liquid storage medicine bag 4 is software capsules, its volume is along with the minimizing atrophy gradually of capsule inner liquid medicine, utilize the negative pressure of the pumpback generation of injection ram 12 in the injection tube 13, need not passage also can be to the intracavity perfusion of injection tube 13, after the medicinal liquid of liquid storage medicine bag 4 uses up, can refill medicinal liquid, liquid storage medicine bag 4 is restored to the original state.
This utility model has overcome subcutaneous drug delivery implant device under sealing state, if use rigid medicine bag, even increase negative pressure, also can't discharge the problem of medicinal liquid.The projection of button 11 is not higher than 2 millimeters of housing 1 outer surfaces, so, when unexpected [, also can not cause the injection of doser.
Those skilled in the art will recognize that; the above-mentioned specific embodiment is exemplary; be in order to make those skilled in the art can better understand this patent content; should not be construed as is restriction to this patent protection domain; change or modify so long as disclose spiritual any being equal to of being done, all fall into this patent protection domain according to this patent.
Claims (9)
1. Endermic implantating doser, it is characterized in that: it comprises housing and is arranged at the intravital syringe pump assembly of described shell, described syringe pump assembly comprises injection catch bar, liquid storage medicine bag and injection tube, described injection catch bar is inserted in the described injection tube and can slides along the injection tube inwall, described liquid storage medicine bag is connected with described injection tube, and described housing is provided with a medicinal liquid inlet that is used for to described liquid storage medicine bag injection medicinal liquid.
2. Endermic implantating doser according to claim 1 is characterized in that: also be provided with at least one medicine that is connected with described liquid storage medicine bag and described medicinal liquid inlet respectively and inject chamber between described medicinal liquid inlet and described liquid storage medicine bag.
3. Endermic implantating doser according to claim 1, it is characterized in that: an end of described injection catch bar is connected with injection ram, described injection ram is inserted in the described injection tube and can slides along the injection tube inwall, the other end of described injection catch bar is positioned at outside the described housing, and the boss on the described injection catch bar contacts with described inner walls.
4. Endermic implantating doser according to claim 1 is characterized in that: described syringe pump assembly also comprises the injection tube fixed mount that is used for fixing injection tube, and described injection tube fixed mount is arranged at described enclosure interior central authorities.
5. Endermic implantating doser according to claim 4 is characterized in that: described syringe pump assembly also comprises the spring that is sleeved on the described injection catch bar, and described spring is between described boss and described injection tube fixed mount.
6. Endermic implantating doser according to claim 3 is characterized in that: described syringe pump assembly also comprises button, and described button is arranged at and is positioned on the outer described injection catch bar of described housing.
7. Endermic implantating doser according to claim 6 is characterized in that: the ultimate range of described button pressed downwards equates with the height of described injection tube inner chamber.
8. Endermic implantating doser according to claim 1 is characterized in that: described liquid storage medicine bag is enclosed in the described injection catch bar outside, and the cross section of described liquid storage medicine bag in the form of a ring.
9. Endermic implantating doser according to claim 1, it is characterized in that: second transfusion catheter that described injection tube is connected with described liquid storage medicine bag is provided with the injection tube inlet non-return valve that prevents that medicinal liquid from refluxing, and the connector that described injection tube is connected with described extraneous conduit is provided with the injection tube outlet non-return valve that prevents that medicinal liquid from refluxing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120125839XU CN202061177U (en) | 2011-04-26 | 2011-04-26 | Hypodermic implantation type drug administration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120125839XU CN202061177U (en) | 2011-04-26 | 2011-04-26 | Hypodermic implantation type drug administration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202061177U true CN202061177U (en) | 2011-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120125839XU Expired - Fee Related CN202061177U (en) | 2011-04-26 | 2011-04-26 | Hypodermic implantation type drug administration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202061177U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151346A (en) * | 2011-04-26 | 2011-08-17 | 上海白塔医药科技有限公司 | Hypodermic implantation type medicine feeder |
| CN104759023A (en) * | 2015-04-08 | 2015-07-08 | 四川大学华西医院 | In-vivo medicine delivery device capable of refilling medicine |
-
2011
- 2011-04-26 CN CN201120125839XU patent/CN202061177U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151346A (en) * | 2011-04-26 | 2011-08-17 | 上海白塔医药科技有限公司 | Hypodermic implantation type medicine feeder |
| CN104759023A (en) * | 2015-04-08 | 2015-07-08 | 四川大学华西医院 | In-vivo medicine delivery device capable of refilling medicine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20120426 |