CN211273087U

CN211273087U - Cervical anesthesia injection device

Info

Publication number: CN211273087U
Application number: CN201921875837.5U
Authority: CN
Inventors: 张媛; 谭瑛; 石华新
Original assignee: Guizhou Orthopedics Hospital
Current assignee: Guizhou Orthopedics Hospital
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-08-18
Anticipated expiration: 2029-11-01

Abstract

The utility model relates to a cervical anesthesia injection device includes at least: the expansion mechanism comprises an expansion head with elasticity and an arc cross section at one end, wherein the end, far away from the arc cross section, of the expansion head is connected with an elastic sleeve and a hollow conduit which is used for supporting the elastic sleeve and penetrates through the elastic sleeve, an expansion accommodating cavity used for accommodating at least one atmosphere of gas and/or liquid is arranged in the elastic sleeve, the side wall of the hollow conduit is provided with at least one expansion through hole which is communicated with the expansion accommodating cavity, and one end, far away from the expansion head, of the hollow conduit is communicated with an expansion injection mechanism; the medicine permeating sleeve is wrapped outside the elastic sleeve and has elasticity, and the outer surface of the medicine permeating sleeve is provided with at least one medicine permeating hole; anesthetic recovery mechanism, anesthetic recovery mechanism set up in expansion mechanism keeps away from thereby can just flow out the anesthetic recovery of cervix extremely anesthetic recovery mechanism of one end of expansion head.

Description

Cervical anesthesia injection device

Technical Field

The utility model belongs to the technical field of medical appliances, especially, relate to a cervical anesthesia injection device.

Background

In the course of curing gynecological diseases, such as artificial abortion, taking and placing intrauterine device and hysteromyoma excision, it is necessary to make the cervix dilate for patient, and before curing or operation, the anesthesia of cervix and cervix cavity is required. Currently, a uterine cavity injector is mostly adopted for anesthesia clinically, and the structure of the uterine cavity injector is composed of an injection needle tube, a push injection handle and an injection needle head.

For example, patent publication No. CN2796661Y discloses a uterine cavity needle, which comprises a needle body with a front end connected with a needle point, a conical plug fixedly connected with the rear end of the needle body, a large end face of the conical plug ending at the front end of a needle handle, and a conical hole in the needle handle. In order to obtain better effect, the needle point is elliptic, and an extension tube can be connected with the conical hole of the needle handle. The multi-purpose needle is realized, the conical plug can prevent the needle from being inserted too deeply and prevent the liquid medicine injected into the uterine cavity from overflowing, the round needle point can avoid stabbing the human body, and the extension tube can make the operation very convenient. However, when this uterine cavity needle is used, anesthesia cannot be performed simultaneously with the expansion, and the operation is complicated. Secondly, the anesthetic agent of entering the cervix of so injection can only anaesthetize cervical wall part, can not reach the purpose of anaesthetizing whole cervical wall, and anesthesia liquid can flow out to patient's health and on the sick bed along the vagina in the anesthesia process moreover, and this brings very big discomfort for the patient, and medical personnel still need carry out the degree of depth clearance after accomplishing the anesthesia, and this just brings very big inconvenience for medical personnel.

Furthermore, on the one hand, due to the differences in understanding to the person skilled in the art; on the other hand, since the inventor has studied a lot of documents and patents when making the present invention, but the space is not limited to the details and contents listed in the above, however, the present invention is by no means free of the features of the prior art, but the present invention has been provided with all the features of the prior art, and the applicant reserves the right to increase the related prior art in the background.

SUMMERY OF THE UTILITY MODEL

To the deficiency of the prior art, the utility model provides a cervical anesthesia injection device, include at least: the expanding mechanism comprises an expanding head with elasticity and an arc cross section at one end, wherein the end, far away from the arc cross section, of the expanding head is connected with an elastic sleeve and is used for supporting the elastic sleeve and penetrates through a hollow conduit arranged in the elastic sleeve, an expansion accommodating cavity used for accommodating at least one atmosphere of gas and/or liquid is arranged in the elastic sleeve, the side wall of the hollow conduit is provided with at least one expansion through hole communicated with the expansion accommodating cavity, one end, far away from the expanding head, of the hollow conduit is communicated with an expansion injection mechanism, the expanding mechanism further comprises a medicine permeating sleeve which is wrapped outside the elastic sleeve and has elasticity and at least one medicine permeating hole in the outer surface, and two ends of the medicine permeating sleeve are respectively connected with one end of the expanding head and the outer wall of the elastic sleeve, so that the medicine permeating sleeve, The expansion head lateral wall and elastic sleeve forms the narcotic that the intercommunication has narcotic injection mechanism and holds the chamber, and narcotic recovery mechanism, narcotic recovery mechanism set up in expansion mechanism keeps away from thereby the narcotic that can just flow out the cervix is retrieved extremely narcotic recovery mechanism.

According to a preferred embodiment, the anesthetic injection mechanism comprises an anesthetic injector communicated with the anesthetic containing cavity and provided with first scale marks, wherein one end of the anesthetic containing cavity, which is far away from the expansion head, is provided with a hose, a first one-way valve and a connector which are sequentially communicated with the anesthetic injector.

According to a preferred embodiment, the anesthetic recovery mechanism comprises: set up in elastic sleeve with annotate recovery sleeve between the narcotic injector, retrieve the sleeve orientation the one end of expansion head is the fender ring of horn mouth shape, retrieve telescopic other end for the drum and with cavity pipe outer wall sealing connection, keep off the junction of ring and drum with form annular anesthesia between the cavity pipe outer wall and inhale the binding off, still including being used for collecting the collecting flask of outflow cervical narcotic and providing the negative pressure suction machine that the anesthetic was absorbed to the negative pressure, the collecting flask with the negative pressure suction machine through three-way negative pressure pipeline with retrieve the sleeve intercommunication, wherein, work as when the negative pressure suction machine starts to provide the negative pressure, the narcotic that can absorb the outflow cervical flows extremely in the collecting flask.

According to a preferred embodiment, the liquid trap bottle is provided with a second one-way valve allowing one-way flow of liquid only from the negative pressure conduit to the liquid trap bottle.

According to a preferred embodiment, the anesthetic-absorbing opening is provided with a sponge assisting in absorbing anesthetic flowing out of the cervix.

According to a preferred embodiment, the stop ring is made of an elastic material, so that the angle between the extension direction of the stop ring in its natural state and the axis of the hollow conduit is 20-45 °, and when the stop ring is subjected to a force directed from the expansion head to the recovery casing, the angle between the extension direction and the axis of the hollow conduit is 45-60 °.

According to a preferred embodiment, the inflation injection mechanism comprises an inflation syringe having an outer wall provided with second graduation marks, wherein the inflation syringe injects liquid or gas to inflate the inflation accommodation chamber, so that the elastic sleeve diameter is enlarged to be approximately the same as the expansion head diameter.

According to a preferred embodiment, a cervical anesthesia injection apparatus comprises at least: the expanding mechanism comprises an expanding head with elasticity and an arc cross section at one end, wherein the end, far away from the arc cross section, of the expanding head is connected with an elastic sleeve and is used for supporting the elastic sleeve and penetrates through a hollow conduit arranged in the elastic sleeve, an expansion accommodating cavity used for accommodating at least one atmosphere of gas and/or liquid is arranged in the elastic sleeve, the side wall of the hollow conduit is provided with at least one expansion through hole communicated with the expansion accommodating cavity, one end, far away from the expanding head, of the hollow conduit is communicated with an expansion injection mechanism, the expanding mechanism further comprises a medicine permeating sleeve which is wrapped outside the elastic sleeve and has elasticity and at least one medicine permeating hole in the outer surface, and two ends of the medicine permeating sleeve are respectively connected with one end of the expanding head and the outer wall of the elastic sleeve, so that the medicine permeating sleeve, Expand first lateral wall and elastic sleeve forms the narcotic that the intercommunication has narcotic injection mechanism and holds the chamber, narcotic recovery mechanism includes: set up in elastic sleeve with annotate recovery sleeve between the narcotic injector, retrieve the sleeve orientation the one end of expansion head is the fender ring of horn mouth shape, retrieve telescopic other end for the drum and with cavity pipe outer wall sealing connection, keep off the junction of ring and drum with form annular anesthesia between the cavity pipe outer wall and inhale the binding off, still including being used for collecting the collecting flask of outflow cervical narcotic and providing the negative pressure suction machine that the anesthetic was absorbed to the negative pressure, the collecting flask with the negative pressure suction machine through three-way negative pressure pipeline with retrieve the sleeve intercommunication, wherein, work as when the negative pressure suction machine starts to provide the negative pressure, the narcotic that can absorb the outflow cervical flows extremely in the collecting flask.

According to a preferred embodiment, a cervical anesthesia injection apparatus comprises at least: the expanding mechanism comprises an expanding head with elasticity and an arc cross section at one end, wherein the end, far away from the arc cross section, of the expanding head is connected with an elastic sleeve and is used for supporting the elastic sleeve and penetrates through a hollow conduit arranged in the elastic sleeve, an expansion accommodating cavity used for accommodating at least one atmosphere of gas and/or liquid is arranged in the elastic sleeve, the side wall of the hollow conduit is provided with at least one expansion through hole communicated with the expansion accommodating cavity, one end, far away from the expanding head, of the hollow conduit is communicated with an expansion injection mechanism, the expanding mechanism further comprises a medicine permeating sleeve which is wrapped outside the elastic sleeve and has elasticity and at least one medicine permeating hole in the outer surface, and two ends of the medicine permeating sleeve are respectively connected with one end of the expanding head and the outer wall of the elastic sleeve, so that the medicine permeating sleeve, Expand first lateral wall and elastic sleeve forms the narcotic that the intercommunication has narcotic injection mechanism and holds the chamber, narcotic recovery mechanism includes: the recovery sleeve is arranged between the elastic sleeve and the anesthetic injector, one end of the recovery sleeve facing the expansion head is in a bell mouth shape and is provided with an anesthetic suction port, the other end of the recovery sleeve is a cylinder and is hermetically connected with the outer wall of the hollow catheter, the anesthetic suction port is provided with anesthetic sponge for assisting in absorbing anesthetic flowing out of a cervix, the recovery sleeve further comprises a liquid collecting bottle for collecting anesthetic flowing out of the cervix and a negative pressure suction machine for providing negative pressure to absorb anesthetic, the liquid collecting bottle and the negative pressure suction machine are communicated with the recovery sleeve through a tee negative pressure pipeline, when the negative pressure suction machine is started to provide negative pressure, the anesthetic flowing out of the cervix can be absorbed into the liquid collecting bottle, the liquid collecting bottle is provided with a second one-way valve which enables liquid to flow to the liquid collecting bottle in a one-way manner from the negative pressure pipeline, and the expansion injection mechanism comprises an expansion injector of which the outer wall is provided with a second scale, wherein the inflation syringe injects a liquid or gas to inflate the inflation containing chamber so that the elastic sleeve diameter becomes approximately the same as the expansion head diameter.

According to a preferred embodiment, at least one of said drug-permeating holes is arranged in a net shape, and the hole diameter is 0.5-2.0 mm.

The utility model provides a cervical anesthesia injection device has one of following advantage at least: compared with the anesthesia injector used at present, the anesthesia and the expansion are carried out simultaneously when the utility model is used, the steps are simplified, so the time can be saved, the pain of the patient can be relieved in the operation process, and the infection can be prevented from being caused, and the medicine receiving is even.

Drawings

Fig. 1 is an axial cross-sectional view of the preferred cervical anesthesia injection apparatus of the present invention in an expanded state;

fig. 2 is a schematic structural view of the preferred cervical anesthesia injection device of the present invention in a natural state; and

fig. 3 is a schematic structural view of a preferred anesthetic injection mechanism of the present invention.

List of reference numerals

1: the expansion head 2: anesthetic injection mechanism 3: recovery sleeve

4: medicine seepage sleeve 4A: medicine seepage hole 4B: anesthetic holding cavity

5: elastic sleeve 5B: expansion accommodation chamber 6: hollow catheter

6A: expansion through hole

7: the hose 8: inflation syringe 8A: second scale mark

9: and (4) liquid collecting bottle 10: negative pressure suction machine 11: second check valve

12: the baffle ring 13: sponge 21: anesthetic injector

22: first scale line 23: connecting head 24: first check valve

Detailed Description

This is described in detail below with reference to fig. 1-3.

The utility model provides a cervical anesthesia injection device, see attached 1, 2, include at least: the expansion mechanism comprises an expansion head 1 which has elasticity and one end of which is provided with a circular arc cross section, wherein one end of the expansion head 1, which is far away from the circular arc cross section of the expansion head, is connected with an elastic sleeve 5 and a hollow conduit 6 which is used for supporting the elastic sleeve 5 and penetrates through the elastic sleeve 5. An expansion accommodation chamber 5B for accommodating gas and/or liquid at least one atmospheric pressure is provided in the elastic sleeve 5. Preferably, the at least one atmosphere may be one, two, three or even more atmospheres, but the at least one atmosphere maximum cannot exceed the maximum pressure acceptable for the elastic sleeve 5, avoiding that the elastic sleeve 5 is burst. The side wall of the hollow conduit 6 is provided with at least one expansion through hole 6A communicated with the expansion containing cavity 5B, preferably, at least one of the expansion through holes 6A can be one, two, three or more, in the preferred embodiment of the present invention, the number of the expansion through holes 6A is 10-20 and the expansion through holes are distributed on the outer surface of the hollow conduit 6 in a net shape. One end of the hollow catheter 6 far away from the expansion head 1 is communicated with an expansion injection mechanism. The injection device further comprises a medicine permeating sleeve 4 which is covered outside the elastic sleeve 5 and has elasticity, and the outer surface of the medicine permeating sleeve is provided with at least one medicine permeating hole 4A, preferably, the number of the medicine permeating holes 4A is 10-30, and the number of the medicine permeating holes 4A is preferably one, or two or three or more medicine permeating holes 4A. Permeate medicine sleeve 4's both ends respectively with expand the one end of

head

1 and 5 outer wall connections of elastic sleeve, thereby make permeate medicine sleeve 4 expand the head 1 lateral wall and elastic sleeve 5 forms the narcotic drug holding cavity 4B that the intercommunication has narcotic drug injection mechanism 2. The anesthetic containing cavity 4B is communicated with all the drug seepage holes 4A, so that anesthetic slowly seeps out of the drug seepage holes 4A into the cervix after being injected into the anesthetic containing cavity 4B from the anesthetic injection mechanism 2. Anesthetic recovery mechanism, anesthetic recovery mechanism set up in expansion mechanism keeps away from thereby can retrieve the anesthetic of outflow cervix to the anesthetic recovery mechanism of one end of expansion head 1. Compared with the anesthesia injector used at present, the anesthesia injector integrates anesthesia and expansion at the same time, thereby simplifying the operation steps, saving time and improving the feeling of patients.

According to a preferred embodiment, said holes 4A are arranged in a mesh, in order to obtain the best penetration effect, and to achieve a sufficient homogeneity of the anaesthesia inside the cervix. The aperture of the drug seepage hole 4A is 0.5-2.0mm, and optionally, the aperture is 0.5mm, 1.0mm, 1.5mm and 2.0 mm.

According to a preferred embodiment, referring to fig. 1 and 2, the anesthetic recovery mechanism comprises: a recovery sleeve 3 disposed between the elastic sleeve 5 and the anesthetic syringe 21. One end of the recovery sleeve 3, which faces the expansion head 1, is a baffle ring 12 in a bell mouth shape, and the other end of the recovery sleeve 3 is a cylinder and is in sealing connection with the outer wall of the hollow guide pipe 6. An annular anesthesia suction port is formed between the joint of the baffle ring 12 and the cylinder and the outer wall of the hollow catheter 6. The baffle ring 12 is used for blocking the anesthetic flowing out of the cervix so that the anesthetic flows to the anesthetic suction port along the bell-mouth-shaped baffle ring 12. Still including being used for collecting the collecting bottle 9 of outflow cervical narcotic and providing the negative pressure suction machine 10 that the negative pressure absorbed the narcotic, collecting bottle 9 with negative pressure suction machine 10 through three-way negative pressure pipeline with retrieve sleeve 3 intercommunication, wherein, work as when negative pressure suction machine 10 starts to provide the negative pressure, can absorb the narcotic flow of outflow cervical extremely in collecting bottle 9.

According to a preferred embodiment, the bottle 9 is provided with a second one-way valve 11 allowing one-way flow of liquid only from the negative pressure conduit to the bottle 9. Through the setting of second check valve 11, can prevent that the narcotic in the collection liquid bottle 9 from flowing back to in retrieving sleeve 3, realize that the narcotic can only unidirectional flow from retrieving sleeve 3 to in the collection liquid bottle 9.

According to a preferred embodiment, the anesthetic-absorbing opening is provided with a sponge 13 assisting in absorbing anesthetic flowing out of the cervix. The sponge 13 can absorb a part of anesthetic flowing out of the cervix, and the sponge 13 can prevent anesthetic liquid from flowing out after the flowing anesthetic can enter the cylindrical structure.

According to a preferred embodiment, the baffle ring 12 is made of an elastic material, preferably a silicone rubber or a rubber. So that the included angle between the extending direction of the baffle ring 12 and the axial lead of the hollow conduit 6 in a natural state is 20-45 degrees, and when the baffle ring 12 is subjected to a force in the direction from the expansion head 1 to the recovery casing, the included angle between the extending direction and the axial lead of the hollow conduit 6 is 45-60 degrees. The baffle ring 12 with elasticity can well seal the anesthetic flowing out of the cervix to the vaginal orifice, the anesthetic flows to the anesthetic suction port along the baffle ring 12 with the bell mouth shape, and the anesthetic is prevented from flowing randomly, so that the aim of recovering the anesthetic is fulfilled.

According to a preferred embodiment, the inflation injection mechanism comprises an inflation syringe 8 provided with second graduation lines 8A on the outer wall, wherein the inflation syringe 8 injects liquid or gas to make the pressure in the inflation accommodation chamber 5B higher than one atmosphere, so that the elastic sleeve 5 is inflated, and the diameter of the elastic sleeve 5 is enlarged to be approximately the same as the diameter of the expansion head 1. The elastic sleeve 5 is made of a highly elastic material, preferably silicone rubber or rubber. The elastic sleeve 5 has a diameter which is smaller than the diameter of the expansion head 1 and larger than the diameter of the hollow guide tube 6 in a natural state. When the inflation accommodation chamber 5B in the elastic sleeve 5 is filled with a liquid or gas at more than one atmospheric pressure, the diameter of the elastic sleeve 5 can be enlarged to be the same as that of the expansion head 1. Through the setting of the expansion injector 8 with scales, liquid or gas can be injected into the expansion accommodating cavity 5B, so that the diameter of the elastic sleeve 5 can be gradually increased, the cervix is slowly opened, the injury caused by rapidly expanding the cervix is reduced, the labor intensity of a doctor can be relieved, and the pain of a patient can be relieved.

According to a preferred embodiment, referring to fig. 3, the anesthetic injection mechanism 2 comprises an anesthetic syringe provided with a first scale mark 22 and communicated with the anesthetic containing cavity 4B, and a hose 10, a first one-way valve 24 and a connector 23 which are sequentially communicated are arranged at one end of the anesthetic containing cavity 4B far away from the expansion head 1 and communicated with the anesthetic syringe. The anesthetic injector with the first scale marks 22 is used for injecting anesthetic, so that accurate anesthetic injection can be realized by observing the scale marks, the phenomenon that the anesthetic dose is too small to cause that the anesthetic time of a cervix is not long enough to require secondary anesthesia is avoided, or the anesthetic dose is excessive to hurt the cervix and a body and the anesthetic dose is too large to cause too much backflow.

According to a preferred embodiment, a cervical anesthesia injection apparatus comprises at least: the expanding mechanism comprises an expanding head 1 with elasticity and an arc cross section at one end, wherein the end of the expanding head 1, which is far away from the arc cross section, is connected with an elastic sleeve 5 and a hollow conduit 6 which is used for supporting the elastic sleeve 5 and penetrates through the elastic sleeve 5, an expansion accommodating cavity 5B which is used for accommodating at least one atmosphere of gas and/or liquid is arranged in the elastic sleeve 5, the side wall of the hollow conduit 6 is provided with at least one expansion through hole 6A which is communicated with the expansion accommodating cavity 5B, one end of the hollow conduit 6, which is far away from the expanding head 1, is communicated with an expansion injection mechanism, the expanding mechanism further comprises a medicine seepage sleeve 4 which is coated outside the elastic sleeve 5 and has elasticity and at least one medicine seepage hole 4A on the outer surface, and two ends of the medicine seepage sleeve 4 are respectively connected with one end of the expanding head 1 and the outer wall of the elastic sleeve 5, so that the medicine infiltration sleeve 4, the side wall of the expansion head 1 and the elastic sleeve 5 form an anesthetic containing cavity 4B communicated with an anesthetic injection mechanism 2, and the anesthetic recovery mechanism comprises: set up in elastic sleeve 5 with annotate recovery sleeve 3 between narcotic injector 21, retrieve sleeve 3 orientation the one end of expansion head 1 is the fender ring 12 of horn mouth shape, retrieve the other end of sleeve 3 be the drum and with 6 outer wall sealing connection of cavity pipe, keep off the junction of ring 12 and drum with form annular anesthesia between the 6 outer walls of cavity pipe and inhale the binding off, still including being used for collecting the collection liquid bottle 9 that flows cervical narcotic and providing the negative pressure suction machine 10 that the negative pressure absorbed the narcotic, collection liquid bottle 9 with negative pressure suction machine 10 through three-way negative pressure pipeline with retrieve sleeve 3 intercommunication, wherein, work as when negative pressure suction machine 10 starts to provide the negative pressure, the narcotic of outflow cervical flows extremely in the collection liquid bottle 9.

According to a preferred embodiment, a cervical anesthesia injection apparatus comprises at least: the expanding mechanism comprises an expanding head 1 with elasticity and an arc cross section at one end, wherein the end of the expanding head 1, which is far away from the arc cross section, is connected with an elastic sleeve 5 and a hollow conduit 6 which is used for supporting the elastic sleeve 5 and penetrates through the elastic sleeve 5, an expansion accommodating cavity 5B which is used for accommodating at least one atmosphere of gas and/or liquid is arranged in the elastic sleeve 5, the side wall of the hollow conduit 6 is provided with at least one expansion through hole 6A which is communicated with the expansion accommodating cavity 5B, one end of the hollow conduit 6, which is far away from the expanding head 1, is communicated with an expansion injection mechanism, the expanding mechanism further comprises a medicine seepage sleeve 4 which is coated outside the elastic sleeve 5 and has elasticity and at least one medicine seepage hole 4A on the outer surface, and two ends of the medicine seepage sleeve 4 are respectively connected with one end of the expanding head 1 and the outer wall of the elastic sleeve 5, so that the medicine infiltration sleeve 4, the side wall of the expansion head 1 and the elastic sleeve 5 form an anesthetic containing cavity 4B communicated with an anesthetic injection mechanism 2, and the anesthetic recovery mechanism comprises: a recovery sleeve 3 arranged between the elastic sleeve 5 and the anesthetic injector 21, wherein one end of the recovery sleeve 3 facing the expansion head 1 is in a bell mouth shape and is provided with an anesthetic suction port, the other end of the recovery sleeve is a cylinder and is hermetically connected with the outer wall of the hollow catheter 6, the anesthetic suction port is provided with anesthetic sponge 13 for assisting in absorbing anesthetic flowing out of a cervix, the recovery sleeve further comprises a liquid collecting bottle 9 for collecting anesthetic flowing out of the cervix and a negative pressure suction machine 10 for providing negative pressure to absorb anesthetic, the liquid collecting bottle 9 and the negative pressure suction machine 10 are communicated with the recovery sleeve 3 through a three-way negative pressure pipeline, when the negative pressure suction machine 10 is started to provide negative pressure, anesthetic flowing out of the cervix can be absorbed into the liquid collecting bottle 9, the liquid collecting bottle 9 is provided with a second one-way valve 11 which enables liquid to flow to the liquid collecting bottle 9 in a one-way from the negative pressure pipeline, the inflation injection mechanism comprises an inflation injector 8 with second scale marks 8A arranged on the outer wall, wherein the inflation injector 8 injects liquid or gas to inflate the inflation accommodating cavity 5B, so that the diameter of the elastic sleeve 5 is enlarged to be approximately the same as that of the expansion head 1.

For easy understanding, the working principle of the cervical anesthesia injection device of the present invention is explained as follows: the expansion head 1 is extended into the cervix, then the expansion injector 8 injects gas or liquid to expand the elastic sleeve 5 until the diameter of the elastic sleeve 5 is close to that of the expansion head 1, then the anesthetic injector 21 injects anesthetic, finally the negative pressure suction machine 10 is started to absorb the anesthetic flowing out of the cervix, finally the expansion injector 8 deflates or recovers liquid to recover the diameter of the elastic sleeve 5 to a natural state, and the expansion mechanism is pulled out of the body.

It should be noted that the above-mentioned embodiments are exemplary, and those skilled in the art can devise various solutions in light of the present disclosure, which are also within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present specification and drawings are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. A cervical anesthesia injection apparatus, comprising at least:

the expansion mechanism comprises an expansion head (1) which has elasticity and an arc cross section at one end, wherein an elastic sleeve (5) and a hollow conduit (6) which is used for supporting the elastic sleeve (5) and penetrates through the elastic sleeve (5) are connected to one end, away from the arc cross section, of the expansion head (1), an expansion accommodating cavity (5B) which is used for accommodating at least one atmosphere of gas and/or liquid is arranged in the elastic sleeve (5), at least one expansion through hole (6A) which is communicated with the expansion accommodating cavity (5B) is arranged on the side wall of the hollow conduit (6), and an expansion injection mechanism is communicated with one end, away from the expansion head (1), of the hollow conduit (6);

the drug permeating sleeve (4) is wrapped outside the elastic sleeve (5), has elasticity and is provided with at least one drug permeating hole (4A) in the outer surface, and two ends of the drug permeating sleeve (4) are respectively connected with one end of the expansion head (1) and the outer wall of the elastic sleeve (5), so that an anesthetic containing cavity (4B) communicated with the anesthetic injection mechanism (2) is formed by the drug permeating sleeve (4), the side wall of the expansion head (1) and the elastic sleeve (5);

anesthetic recovery mechanism, anesthetic recovery mechanism set up in expansion mechanism keeps away from thereby can retrieve the anesthetic of outflow cervix extremely anesthetic recovery mechanism of one end of expansion head (1).

2. The device according to claim 1, characterized in that the anesthetic injection mechanism (2) comprises an anesthetic injector (21) provided with a first scale mark (22) and communicated with the anesthetic containing cavity (4B), and one end of the anesthetic containing cavity (4B) far away from the expansion head (1) is provided with a hose (7), a first one-way valve (24) and a connector (23) which are communicated in sequence and communicated with the anesthetic injector (21).

3. The apparatus of claim 2, wherein the anesthetic recovery mechanism comprises: the recovery sleeve (3) is arranged between the elastic sleeve (5) and the anesthetic injector (21), one end, facing the expansion head (1), of the recovery sleeve (3) is a baffle ring (12) in a bell mouth shape, the other end of the recovery sleeve (3) is a cylinder and is in sealing connection with the outer wall of the hollow catheter (6), and an annular anesthetic suction port is formed between the joint of the baffle ring (12) and the cylinder and the outer wall of the hollow catheter (6);

the collecting bottle (9) is used for collecting cervical anesthetic flowing out and the negative pressure suction machine (10) is used for providing negative pressure to absorb the anesthetic, the collecting bottle (9) and the negative pressure suction machine (10) are communicated with the recovery sleeve (3) through a three-way negative pressure pipeline, and when the negative pressure suction machine (10) is started to provide negative pressure, the anesthetic flowing out of a cervix can be absorbed into the collecting bottle (9).

4. A device according to claim 3, characterized in that the bottle (9) is provided with a second one-way valve (11) which enables one-way flow of liquid only from the negative pressure conduit to the bottle (9).

5. The device according to claim 4, characterized in that the anesthetic-absorbing opening is provided with a sponge (13) assisting in absorbing anesthetic flowing out of the cervix.

6. The device according to claim 5, characterized in that the baffle ring (12) is made of an elastic material and has an angle of 20-45 ° between its natural extension direction and the axis of the hollow conduit (6), and an angle of 45-60 ° between its natural extension direction and the axis of the hollow conduit (6) when the baffle ring (12) is subjected to a force directed from the expansion head (1) to the recovery sleeve (3).

7. The device according to claim 6, characterized in that the inflation injection mechanism comprises an inflation injector (8) having an outer wall provided with second graduation marks (8A), wherein the inflation injector (8) injects a liquid or a gas to inflate the inflation accommodation chamber (5B) so that the elastic sleeve (5) becomes larger in diameter to be substantially the same as the diameter of the expansion head (1).

8. A cervical anesthesia injection apparatus, comprising at least:

the drug permeation sleeve (4) is coated outside the elastic sleeve (5), has elasticity, and is provided with at least one drug permeation hole (4A) in the outer surface, and two ends of the drug permeation sleeve (4) are respectively connected with one end of the expansion head (1) and the outer wall of the elastic sleeve (5), so that an anesthetic containing cavity (4B) communicated with the anesthetic injection mechanism (2) is formed by the drug permeation sleeve (4), the side wall of the expansion head (1) and the elastic sleeve (5);

the anesthetic recovery mechanism includes: the recovery sleeve (3) is arranged between the elastic sleeve (5) and the anesthetic injector (21), one end, facing the expansion head (1), of the recovery sleeve (3) is a baffle ring (12) in a bell mouth shape, the other end of the recovery sleeve (3) is a cylinder and is in sealing connection with the outer wall of the hollow catheter (6), and an annular anesthetic suction port is formed between the joint of the baffle ring (12) and the cylinder and the outer wall of the hollow catheter (6);

still including being used for collecting bottle (9) of outflow cervical narcotic and providing negative pressure suction machine (10) that the negative pressure absorbed narcotic, collecting bottle (9) with negative pressure suction machine (10) through the negative pressure pipeline of tee bend with retrieve sleeve (3) intercommunication, wherein, work as when negative pressure suction machine (10) start-up provides the negative pressure, can absorb the narcotic that flows out the cervix flow to in collecting bottle (9).

9. A cervical anesthesia injection apparatus, comprising at least:

the anesthetic recovery mechanism includes: the recovery sleeve (3) is arranged between the elastic sleeve (5) and the anesthetic injector (21), one end of the recovery sleeve (3) facing the expansion head (1) is in a bell mouth shape and is provided with an anesthetic suction port, the other end of the recovery sleeve is a cylinder and is hermetically connected with the outer wall of the hollow catheter (6), and the anesthetic suction port is provided with an anesthetic sponge (13) for assisting in absorbing anesthetic flowing out of a cervix; the device also comprises a liquid collecting bottle (9) used for collecting anesthetic flowing out of the cervix and a negative pressure suction machine (10) used for providing negative pressure to absorb the anesthetic, wherein the liquid collecting bottle (9) and the negative pressure suction machine (10) are communicated with the recovery sleeve (3) through a three-way negative pressure pipeline, and when the negative pressure suction machine (10) is started to provide negative pressure, the anesthetic flowing out of the cervix can be absorbed and discharged into the liquid collecting bottle (9); the liquid collecting bottle (9) is provided with a second one-way valve (11) which enables liquid to flow to the liquid collecting bottle (9) from the negative pressure pipeline in one way only;

the inflation injection mechanism comprises an inflation injector (8) with second scale marks (8A) arranged on the outer wall, wherein the inflation injector (8) injects liquid or gas to inflate the inflation accommodating cavity (5B), so that the diameter of the elastic sleeve (5) is enlarged to be approximately the same as that of the expansion head (1).

10. The device according to claim 9, wherein the drug-permeating holes (4A) are arranged in a net shape, and the hole diameter is 0.5-2.0 mm.