CN2197957Y

CN2197957Y - Needle front zone automatic detection puncture outfit

Info

Publication number: CN2197957Y
Application number: CN 94228275
Authority: CN
Inventors: 刁力; 梁延德
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-04-08
Filing date: 1994-04-08
Publication date: 1995-05-24
Anticipated expiration: 2004-04-08

Abstract

The utility model relates to a need front zone automatic detection puncture outfit, belonging to a medical device. The front end of a needle handle of the puncture outfit is provided with a puncture needle head, and a cavity channel of the needle handle is provided with a communicating vessel. The utility model is characterized in that a probe in the position of a probe front zone is inserted in the tube of the needle head of the puncture outfit, and the tail end of the probe is provided with a probe automatic displacement sensor. The utility model can ensure that the puncture outfit is in the film position of a given needle front zone on the in the whole process of puncturing. The problems that the present puncture needle tool used in the clinic thoracentesis, the abdominal paracentesis, the pericardiocentesis, etc. has difficult operation, low accuracy rate for judgment, no safety, etc. are solved. The operator judges the needle head position by hand feeling and experiences in the past, which is replaced with the fact that the needle head position can be confirmed automatically.

Description

Needle front zone automatic detection puncture outfit

This utility model relates to a kind of pin proparea and surveys perforator automatically, and this perforator belongs to a kind of medical apparatus.

Puncture technique is a kind of effective means of clinical diagnosis and clinical treatment, generally is used for diagnosis, pathology collection or discharges hydrops, and purposes such as pneumatosis and blood, for example: common thoracentesis, abdominal paracentesis, paracentesis pericardii etc.Clinical puncture needle commonly used is the simplest at present, promptly adopt syringe needle to be equipped with passive syringe, manual operations, advantage be simple, cost is low, sterilization is convenient, shortcoming is that need judge with feel and experience whether syringe needle arrives the tram, and when should withdraw from.This just brings sizable difficulty to the operator, and judging nicety rate is low, is difficult for obtaining ideal effect, has certain risk.Therefore the receiver often also produces the psychology of fear.Therefore, for puncture technique, determine that pin forefoot area situation is very necessary.

So-called pin forefoot area is meant between parietal layer film and the visceral layer film as a rule.Require to judge whether transparent walls film and do not injure the visceral layer film just of needle point, perhaps along with hydrops, the extraction of pneumatosis, originally whether be gradually near touching needle point away from the visceral layer film of needle point, needle point is when penetrating different retes and organizing, the resistance that is run into is different, experienced operator, can recognize the variation of needle point resistance according to feel, thereby make necessary judgement, if be the abecedarian or lack experience, be easy to damage the visceral layer film and cause a pair damage,, then can provide reliable foundation for correct judgement if can verify the variation of acupuncture resistance in time.

The purpose of this utility model is to develop a kind of novel pin proparea and surveys perforator automatically, thereby overcomes above-mentioned many shortcomings, provides a kind of means that puncture efficiently, reliably, easily for clinical.This perforator is equipped with displacement transducer on needle handle, make puncture needle itself have detecting function.

The purpose of this utility model is achieved in that

Perforator is surveyed in a kind of pin proparea automatically, this perforator comprises the needle handle that is processed with passage and is contained in the piercing needle of needle handle front end, it is characterized in that being fitted with in the needle tubing of said perforator syringe needle the probe of zone position before the probe, this probe is not held and is provided with the automatic displacement transducer of probe.Above-mentioned probe front is processed body structure ringwise, and the diameter of this spheroplast should be greater than the diameter of probe body.The sensor can be assemblied in the needle handle cavity, and the adapter position of this pick off and probe is provided with potted component, and the sealing element can adopt corrugated tube to be sleeved on the adapter outside.The sensor can adopt guide post and electromagnetism wire ring to be assemblied in composition in its housing, and wherein an end of said guide post is connected with adapter, and other end magnetic core is positioned at solenoid, can install spring between above-mentioned guide post and the solenoid.Integral sensors can be threaded with knob and be fixed in the perforator needle handle cavity.In order to guarantee that probe drives the relative solenoid of guide post magnetic core and produces relative displacement, make the coil both end voltage produce linear change, the guide post of above-mentioned probe and pick off and solenoid should be positioned on the same axial line.The voltage change signal that the relative solenoid displacement of guide post magnetic core produces can be transferred to signal amplifier and audible-visual annunciator with this signal by signal cable, carries out the signal amplification and promotes sound light alarming circuit work.To inform or alert perforator residing position in patient's body.

The pin proparea that this utility model provides is surveyed perforator automatically and can be guaranteed in whole piercing process, accurately in rete position, given pin proparea, the existing operation easier of puncture needle such as present clinical thoracentesis, abdominal paracentesis, paracentesis pericardii are big, judging nicety rate is low, uneasy congruent problem thereby solved, and make operator by judged with feel and experience that needle position became automatically definite syringe needle position of living in the past.The acupuncture resistance of this perforator can detect by mechanics sensor or displacement transducer, and this utility model selects to have designed a kind of right sensors, and it is reasonably made up with syringe needle, has advantages such as simple in structure, easy to use, accuracy of judgement.Constituting ingeniously, is a kind of novel puncture medical treatment needle set that can show pin forefoot area status information.

Introduce this utility model specific embodiment in detail below in conjunction with accompanying drawing.

Fig. 1 is this utility model perforator fundamental diagram.

Fig. 2 is this utility model example structure cut-away view.

Among the figure: 1. three-way valve 2. pick offs 3. needle handles 4. plugs 5. passages 6. syringe needles 7. probes 8. adapters 9. potted components 10. housings 11. cavitys 12. guide posts 13. springs 14. sealing rings 15. coils 16. knobs 17. cables

In the present embodiment, needle handle 3 front ends are equipped with piercing needle 6, are processed with passage 5 in the needle handle 3, are provided with plug 4 in this passage 5, and the end of needle handle passage 5 is equipped with a three-way valve 1, are used to connect syringe and use.In above-mentioned syringe needle 6 needle tubings probe 7 is housed, this probe 7 is installed in an end of guide post 12 by adapter 8, and the other end magnetic core of this guide post 12 is positioned at solenoid 15.Guide post 12 and solenoid 15 are assemblied in and constitute displacement transducer 2 in the housing 10.The front end of housing 10 is adapters 8.Above-mentioned housing 10 is assemblied in needle handle 3 cavitys 11, and corrugated tube is equipped with as potted component 9 in adapter 8 outsides between probe 7 and the guide post 12, and pick off 2 and probe 7 are isolated.Be provided with spring 13 between guide post 12 and the solenoid 15, sealing ring 14 fixedly is assemblied in the needle handle cavity 11 together with pick off 2 by knob 16.The signal that pick off 2 transfers out is connected with signal amplifier and audible-visual annunciator by cable 17.Above-mentioned probe 7 is positioned on the same axis with the guide post 12 and the solenoid 15 of pick off 2, linear to guarantee the output of probe displacement and signal, the position and the structural state in puncture needle proparea are shown in the acousto-optic mode, for operator carry out proper operation and avoid secondary damage that reliable basis is provided.

Claims

1, perforator is surveyed in a kind of pin proparea automatically, this perforator comprises the needle handle [3] that is processed with passage [5] and is contained in the piercing needle [6] of needle handle [3] front end, it is characterized in that being fitted with in the needle tubing of said perforator syringe needle [6] probe [7] of zone position before the probe, this probe is not held and is provided with probe [7] displacement transducer [2] automatically.

2, perforator according to claim 1 is characterized in that said perforator probe ［ 7 ］ front end body structure spherical in shape, and this spheroplast's diameter is greater than the probe body diameter.

3, perforator according to claim 1 and 2 is characterized in that being equipped with in said perforator needle handle ［ 3 ］ cavity ［ 11 ］ pick off ［ 2 ］, and this pick off ［ 2 ］ is provided with potted component ［ 9 ］ with the adapter position of probe ［ 7 ］.

4, perforator according to claim 3 is characterized in that the potted component ［ 9 ］ between the adapter ［ 8 ］ of said perforator probe ［ 7 ］ and pick off ［ 2 ］ adopts seal bellows, and this corrugated tube is sleeved on adapter ［ 9 ］ outside.

5, perforator according to claim 1, it is characterized in that in the sensor housing in the said perforator needle handle cavity ［ 11 ］ pick off of being made up of guide post ［ 12 ］ and magnetic coil ［ 15 ］［ 2 ］ being housed, wherein guide post ［ 12 ］ one ends are connected with adapter ［ 9 ］, other end magnetic core is positioned at solenoid ［ 15 ］, is provided with spring between guide post ［ 12 ］ and the solenoid ［ 15 ］.

6, perforator according to claim 5 is characterized in that the pick off ［ 2 ］ of said perforator is fixedlyed connected with needle handle ［ 3 ］ cavity ［ 11 ］ screw thread by knob ［ 16 ］, is assemblied in this needle handle ［ 3 ］ cavity ［ 11 ］.

7,, it is characterized in that the probe ［ 7 ］ of said perforator and the guide post ［ 12 ］ and the solenoid ［ 15 ］ of pick off ［ 2 ］ are positioned on the same axis according to claim 4 or 5 described perforators.

8, perforator according to claim 1 or 5 is characterized in that said pick off ［ 2 ］ connects signal amplifier and audible-visual annunciator by signal cable ［ 17 ］.

9, perforator according to claim 1 is characterized in that the linker ［ 1 ］ of said perforator is a three-way valve.