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CN116211424A - Uterine cavity saccule dilating catheter pusher and use method thereof - Google Patents

Uterine cavity saccule dilating catheter pusher and use method thereof Download PDF

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Publication number
CN116211424A
CN116211424A CN202310264851.6A CN202310264851A CN116211424A CN 116211424 A CN116211424 A CN 116211424A CN 202310264851 A CN202310264851 A CN 202310264851A CN 116211424 A CN116211424 A CN 116211424A
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Prior art keywords
sleeve
balloon
groove
catheter
uterine
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Granted
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CN202310264851.6A
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Chinese (zh)
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CN116211424B (en
Inventor
陈若
朱杰
沈湘
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Zhuzhou Maowu Medical Technology Co ltd
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Zhuzhou Maowu Medical Technology Co ltd
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Publication of CN116211424A publication Critical patent/CN116211424A/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • A61B17/42Gynaecological or obstetrical instruments or methods
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/10Balloon catheters
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • A61B17/42Gynaecological or obstetrical instruments or methods
    • A61B2017/4216Operations on uterus, e.g. endometrium

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Surgery (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • Molecular Biology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pregnancy & Childbirth (AREA)
  • Reproductive Health (AREA)
  • Gynecology & Obstetrics (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Surgical Instruments (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

The invention discloses a uterine cavity saccule dilating catheter pusher and a use method thereof, wherein the uterine cavity saccule dilating catheter pusher comprises a first sleeve and a second sleeve, the first sleeve is sleeved on the outer side of the second sleeve, and the second sleeve is sleeved on the outer side of a catheter; the second sleeve is provided with a second sleeve groove for removing the catheter, the first sleeve is provided with a first sleeve groove for removing the second sleeve, the inner side of one end of the first sleeve is provided with a fixing cavity for fixing the balloon, and the second sleeve slides in the first sleeve to be used for pushing the balloon out of the first sleeve. According to the technical scheme, the balloon of the uterine cavity balloon is curled or folded and placed into the fixed cavity to be assembled, when the uterine cavity balloon is used, one section of the fixed cavity is placed into the uterus, the second sleeve is pushed to push the balloon out of the first sleeve after reaching a designated position, and then the second sleeve and the first sleeve are withdrawn, so that the problems that the balloon is easy to be infected or damaged due to the fact that the balloon is clamped and curled into the uterus by using the surgical forceps are prevented.

Description

Uterine cavity saccule dilating catheter pusher and use method thereof
Technical Field
The invention relates to the technical field of uterine cavity balloon dilation catheter pushers, in particular to a uterine cavity balloon dilation catheter pusher and a use method thereof.
Background
Clinically, more and more operations for treating uterine lesions, such as hysteroscopic operations, etc., are performed, and endometrial damage is caused by uterine cavity operation or secondary infection, so that pathological symptoms of mutual adhesion of uterine cavity walls are caused, and the uterine cavity adhesion causes great pain to patients and leads to occurrence of related complications. The wound crusting is easy to adhere after the operation of uterine cavity, the balloon capable of being filled with water is placed in the uterus, water is filled to form a barrier, and the wound crusting is taken out after the wound crusting is finished, so that the adhesion is prevented. The larger the surface area of the barrier interface is, the better the anti-adhesion effect is, and the shape of the inverted pear-shaped uterus section is adopted, so that the embedded balloon basically has the shape of wide front end and narrow rear end, and is similar to the inverted pear-shaped uterus section. The cervix of the imbedding channel is a long and narrow channel, the imbedding inverted pear-shaped saccule can pass through the channel when being curled into a stick shape, and the saccule material is usually made of soft materials such as silica gel, latex and the like, and is difficult to keep after being curled into the stick shape, so that the problem that the saccule is easy to be infected or damaged because surgical forceps are needed to clamp and curl the saccule to be placed into the uterus is solved.
Disclosure of Invention
The invention mainly aims to provide a uterine cavity balloon dilation catheter pusher, which aims to solve the problem that the existing forceps are clamped and curled into uterus to easily cause infection or balloon damage.
In order to achieve the above purpose, the uterine cavity balloon dilation catheter pusher provided by the invention comprises a first sleeve and a second sleeve, wherein the first sleeve is sleeved on the outer side of the second sleeve, and the second sleeve is sleeved on the outer side of the catheter; the catheter is characterized in that a second sleeve groove for removing the catheter is formed in the second sleeve, a first sleeve groove for removing the second sleeve is formed in the first sleeve, a fixing cavity for fixing the balloon is formed in the inner side of one end of the first sleeve, the second sleeve slides in the first sleeve to push the balloon out of the first sleeve, a first outlet groove is formed in the middle of the first sleeve in a opposite mode, and the first outlet groove is formed in the circumferential direction of the first sleeve.
Preferably, a second outlet groove is formed in the middle of the second sleeve, and a first outlet groove is formed in the middle of the first sleeve corresponding to the second outlet.
Preferably, a limiting block is arranged on the outer side wall of the second sleeve, the limiting block is arranged in the first sleeve groove to slide, a limiting groove is formed in the inner side wall of the first sleeve, and the limiting block slides in the limiting groove when the second sleeve ejects the balloon to rotate the second sleeve.
Preferably, the limiting block is arranged at one end of the second sleeve, which is far away from the balloon.
Preferably, the opening direction of the first sleeve groove on the first sleeve is opposite to the opening direction of the second sleeve groove on the second sleeve.
Preferably, one end of the second sleeve is abutted with the balloon, and the other end of the second sleeve is provided with a pull ring.
Preferably, the device further comprises a limiter which is clamped with the first sleeve, the limiter is movably connected with the second sleeve, and the limiter limits the sliding of the second sleeve when the limiter is clamped with the first sleeve.
Preferably, the first sleeve is provided with a clamping strip, the clamping strip is perpendicular to the axis direction of the first sleeve, and the limiter is provided with a limiting groove clamped with the clamping strip.
Preferably, a limiting plate is arranged at one end of the second sleeve, which is far away from the balloon.
The invention also comprises a using method of the uterine cavity saccule dilating catheter pusher, the saccule is fixed in the fixed cavity, the second sleeve is sleeved outside the catheter, one end of the catheter, which is far away from the saccule, extends out of the first outlet groove, and one end of the second sleeve is abutted with the saccule and simultaneously is fixed in the first sleeve;
extending one end of the first sleeve, which is provided with a fixing cavity, from the cervix into the uterus, and after reaching a preset position, filling gas or liquid into the balloon through the catheter;
rotating the second sleeve so that the opening of the second sleeve groove faces the same direction as the opening of the first sleeve groove, and then taking the second sleeve out of the first sleeve;
the first cannula is removed.
According to the technical scheme, the balloon of the uterine cavity balloon is curled or folded and placed into the fixed cavity, the guide pipe is clamped in the second sleeve, the second sleeve is clamped in the first sleeve, one end of the guide pipe, which is far away from the balloon, extends out of the first outlet groove, so that assembly is completed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a uterine cavity balloon dilation catheter pusher of the present invention.
Fig. 2 is a schematic cross-sectional structure of the uterine cavity balloon dilation catheter pusher of the present invention.
Fig. 3 is a schematic perspective view of the uterine cavity balloon dilation catheter pusher of the present invention.
Reference numerals illustrate:
1. a first sleeve; 2. a second sleeve; 3. a second sleeve groove; 4. a first sleeve groove; 5. a fixed cavity; 6. a limiting block; 7. a pull ring; 8. a limiter; 9. clamping strips; 10. a limit groove; 11. a limiting plate; 12. a balloon; 13. a conduit; 14. a one-way valve; 15. a second outlet tank; 16. a first outlet slot.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.
Referring to fig. 1-3, the present invention provides a uterine cavity balloon dilation catheter pusher, which comprises a first sleeve and a second sleeve, wherein the first sleeve is sleeved outside the second sleeve, and the second sleeve is sleeved outside the catheter; the catheter is characterized in that a second sleeve groove for removing the catheter is formed in the second sleeve, a first sleeve groove for removing the second sleeve is formed in the first sleeve, a fixing cavity for fixing the balloon is formed in the inner side of one end of the first sleeve, and the second sleeve slides in the first sleeve to push the balloon out of the first sleeve.
According to the technical scheme, the balloon of the uterine cavity balloon is curled or folded and placed into the fixed cavity, the guide pipe is clamped in the second sleeve, the second sleeve is clamped in the first sleeve, and therefore assembly is completed.
Meanwhile, when the catheter is deep into the uterus and inflated, the opening direction of the second sleeve groove is staggered with the opening direction of the first sleeve groove, so that the catheter can be prevented from sliding out of the first sleeve and the second sleeve; the second sleeve is rotated, so that the opening direction of the second sleeve groove is the same as that of the first sleeve groove, the visual field of a doctor is clearer, the doctor is easy to operate, then the second sleeve and the first sleeve are taken out, when the first sleeve and the second sleeve are taken out, only a thinner catheter is left after the first sleeve and the second sleeve are taken out, the influence of the catheter on the vagina and the uterine cavity can be reduced, the foreign body sensation is reduced, and the patient is more comfortable.
Moreover, the duct extends from the first opening groove, so that the length of the duct can be shortened, the length of the duct exposed outside is reduced, the comfort of a user is increased, the infection risk is reduced, and the manufacturing cost is reduced;
and when taking out, the catheter tail end that stretches out from first open slot is rotated through the rotation drive of second sleeve pipe to increase certain torsion for the intraductal catheter of second sleeve pipe, the catheter is connected with the sacculus, and the torsion is passed to the sacculus and is increased sacculus and uterus wall pressure, thereby increases the frictional force between sacculus and the uterus wall, is difficult for taking out or drive the sacculus when second sleeve pipe and first sleeve pipe take out, and after first sleeve pipe and second sleeve pipe take out, the catheter is rotatory reset by oneself slowly, can not cause the damage to the human body.
Specifically, the first sleeve groove and the second sleeve groove can prevent the check valve or the connecting nozzle connected at the rear of the uterine cavity balloon catheter from clamping the second sleeve or the second sleeve from exiting, and the rotating angle of the catheter can be adjusted by adjusting the distance from the first opening groove to the first sleeve groove, so that the balloon and the uterine wall pressure are influenced.
Referring to fig. 3, in another embodiment of the present invention, a second outlet groove is formed in the middle of the second sleeve, and a first outlet groove is formed in the middle of the first sleeve corresponding to the second outlet.
Specifically, the second outlet groove and the first opening groove are correspondingly arranged, the guide pipe penetrates out of the second outlet groove and the first opening groove, so that the length of the guide pipe can be shortened, the length of the guide pipe exposed outside is reduced, the comfort level of a user is increased, the manufacturing cost is reduced, the length of the first sleeve and the length of the second sleeve are not limited by the length of the guide pipe, the length of the first sleeve and the length of the second sleeve are proper, the operation is convenient, the ratio of the length of the second outlet groove of the first outlet groove is controlled, the rotation angle of the guide pipe is adjusted, and the pressure of the balloon and the uterine wall is adjusted.
In another embodiment of the present invention, a stopper is disposed on an outer side wall of the second sleeve, the stopper is disposed in the first sleeve groove and slides, a stopper groove is disposed on an inner side wall of the first sleeve, and the stopper slides in the stopper groove when the second sleeve ejects the balloon to rotate the second sleeve.
Specifically, a limiting block is arranged to slide in the first sleeve, so that the second sleeve is limited to rotate in the first sleeve, and the outlet directions of the first outlet groove and the second outlet groove are prevented from being overlapped, so that the guide pipe directly slides out. When the second sleeve is required to rotate in the first sleeve, the limiting block reaches the limiting groove, so that the second sleeve can rotate and can be prevented from sliding in the first sleeve when rotating.
In yet another embodiment of the present invention, the stopper is disposed at an end of the second sleeve remote from the balloon.
Specifically, the limiting block is prevented from being extruded or scratched when the limiting block is positioned at the front and enters the human body to move internally.
In yet another embodiment of the present invention, the opening direction of the first sleeve groove on the first sleeve is opposite to the opening direction of the second sleeve groove on the second sleeve. One end of the first open groove is communicated with the first sleeve groove, and one end of the first open groove reaches the other side of the first sleeve groove of the first sleeve.
Specifically, the opening directions of the first sleeve groove and the second sleeve groove are opposite, so that the first sleeve and the second sleeve are mutually buckled, and the catheter is prevented from directly sliding out of the first sleeve groove or the second sleeve groove.
In yet another embodiment of the present invention, one end of the second sleeve abuts against the balloon, and the other end of the second sleeve is provided with a pull ring.
Specifically, a pull ring is arranged to slide the second sleeve, so that the second sleeve can be conveniently slid.
In still another embodiment of the present invention, the sliding device further includes a stopper clamped with the first sleeve, the stopper is movably connected with the second sleeve, and the stopper limits the sliding of the second sleeve when the stopper is clamped with the first sleeve.
In particular, the method comprises the steps of,
in still another embodiment of the present invention, the first sleeve is provided with a locking strip, the locking strip is perpendicular to the axial direction of the first sleeve, and the limiter is provided with a limiting groove which is locked with the locking strip.
Specifically, a clamping strip and a limiting groove are arranged to limit the limiter, so that the limiter is prevented from sliding on the first sleeve.
In yet another embodiment of the present invention, an end of the second sleeve remote from the balloon is provided with a limiting plate.
Specifically, fix the one end of limiting plate that is far away from on the second sleeve pipe the sacculus, prevent that the second sleeve pipe from wearing out from first sleeve pipe and causing the damage to the human body.
Referring to figures and drawings, in a further embodiment of the present invention, the uterine cavity balloon dilatation catheter pusher comprises a sealing bag, a balloon arranged in the sealing bag, a catheter, a one-way valve and the uterine cavity balloon dilatation catheter pusher according to any one of the above embodiments, wherein one end of the catheter is connected with the balloon, and the other end of the catheter is provided with the one-way valve; the sacculus is fixed in fixed intracavity, and the second sleeve pipe is established in the pipe outside, second sleeve pipe one end with sacculus butt, the second sleeve pipe, first sleeve pipe is established the second sleeve pipe outside.
Specifically, the uterine cavity balloon dilation catheter pusher and the uterine balloon are both arranged as disposable articles, so that the uterine cavity balloon dilation catheter pusher and the uterine balloon do not need to be assembled again when in use, the time is saved, the time of exposure to air can be reduced, the operation steps and the time are reduced, and the possibility of infection is reduced.
Referring to the drawings, the application method of the uterine cavity balloon dilation catheter pusher provided by the invention comprises the following steps:
the balloon is fixed in the fixing cavity, a second sleeve is sleeved outside the catheter, one end of the second sleeve is abutted with the balloon, and the second sleeve is fixed in the first sleeve;
extending one end of the first sleeve, which is provided with a fixing cavity, from the cervix into the uterus, and after reaching a preset position, filling gas or liquid into the balloon through the catheter; when the first sleeve groove extends, the opening of the first sleeve groove faces upwards.
Rotating the second sleeve so that the opening of the second sleeve groove faces the same direction as the opening of the first sleeve groove, and then taking the second sleeve out of the first sleeve; when the balloon is taken out, the inner diameter of the first sleeve is larger than the inner strength of the second sleeve, so that the contact surface between the first sleeve and the catheter and the stress can be reduced, and the balloon is not easy to be taken out or displaced due to the friction force between the balloon and the uterine wall when the first sleeve is taken out.
In one embodiment, the method for using the uterine cavity balloon dilation catheter pusher provided by the invention comprises the steps of rotating the second sleeve, enabling the opening of the second sleeve groove to face the same direction as the opening of the first sleeve groove, and then taking the second sleeve out of the first sleeve; comprising the following steps:
the second sleeve is rotated 180 degrees so that the second sleeve slot opening faces the same direction as the first sleeve slot opening, and then the second sleeve is removed from the first sleeve.
The foregoing description of the preferred embodiments of the present invention should not be construed as limiting the scope of the invention, but rather utilizing equivalent structural changes made in the present invention description and drawings or directly/indirectly applied to other related technical fields are included in the scope of the present invention.

Claims (10)

1. The uterine cavity saccule dilating catheter pusher is characterized by comprising a first sleeve and a second sleeve, wherein the first sleeve is sleeved on the outer side of the second sleeve, and the second sleeve is sleeved on the outer side of a catheter; the catheter is characterized in that a second sleeve groove for removing the catheter is formed in the second sleeve, a first sleeve groove for removing the second sleeve is formed in the first sleeve, a fixing cavity for fixing the balloon is formed in the inner side of one end of the first sleeve, the second sleeve slides in the first sleeve to push the balloon out of the first sleeve, a first outlet groove is formed in the middle of the first sleeve in a opposite mode, and the first outlet groove is formed in the circumferential direction of the first sleeve.
2. The uterine balloon dilation catheter pusher of claim 1, wherein a second outlet slot is provided in a middle portion of the second sleeve, and a first outlet slot is provided in a middle portion of the first sleeve corresponding to the second outlet.
3. The uterine balloon dilation catheter pusher of claim 1, wherein a stopper is provided on an outer sidewall of the second sleeve, the stopper is provided to slide in the first sleeve groove, a stopper groove is provided on an inner sidewall of the first sleeve, and the stopper slides in the stopper groove when the second sleeve ejects the balloon to rotate the second sleeve.
4. The uterine balloon dilation catheter pusher of claim 2 wherein the stop is disposed at an end of the second sleeve distal to the balloon.
5. The uterine balloon dilation catheter pusher of claim 1 wherein an opening of a first sleeve slot on the first sleeve is in a direction opposite to an opening of a second sleeve slot on the second sleeve.
6. The uterine balloon dilation catheter pusher of claim 1 wherein one end of the second sleeve abuts the balloon and the other end of the second sleeve is provided with a pull ring.
7. The intrauterine balloon dilation catheter pusher of claim 1, further comprising a limiter that is engaged with the first sleeve, the limiter being movably coupled to the second sleeve, the limiter limiting sliding of the second sleeve when engaged with the first sleeve.
8. The uterine balloon dilation catheter pusher of claim 7, wherein a clamping bar is arranged on the first sleeve, the clamping bar is perpendicular to the axis direction of the first sleeve, and a limiting groove clamped with the clamping bar is arranged on the limiter.
9. The uterine balloon dilation catheter pusher of any one of claims 1-8, wherein an end of the second sleeve distal to the balloon is provided with a stop plate.
10. The application method of the uterine cavity balloon dilation catheter pusher is characterized by comprising the following steps of:
the balloon is fixed in the fixing cavity, a second sleeve is sleeved outside the catheter, one end of the second sleeve is abutted with the balloon, and the second sleeve is fixed in the first sleeve;
extending one end of the first sleeve, which is provided with a fixing cavity, from the cervix into the uterus, and after reaching a preset position, filling gas or liquid into the balloon through the catheter;
rotating the second sleeve so that the opening of the second sleeve groove faces the same direction as the opening of the first sleeve groove, and then taking the second sleeve out of the first sleeve;
the first cannula is removed.
CN202310264851.6A 2023-03-17 2023-03-17 Uterine cavity saccule dilating catheter pusher and use method thereof Active CN116211424B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10305103A (en) * 1997-05-08 1998-11-17 Nippon Sherwood Medical Ind Ltd Catheter fixture
JP2015150251A (en) * 2014-02-14 2015-08-24 テルモ株式会社 Tube assembly for medical treatment
CN206045158U (en) * 2016-05-27 2017-03-29 心凯诺医疗科技(上海)有限公司 A kind of new sacculus dilating catheter
US20170296247A1 (en) * 2016-04-14 2017-10-19 Shao-Kang Hsueh Bone cement injection device
CN210612678U (en) * 2019-05-31 2020-05-26 广东康尔乐医疗器械有限公司 Uterine balloon stent with movable sheath
CN111760170A (en) * 2020-07-23 2020-10-13 赛诺医疗科学技术股份有限公司 A guide wire retraction device
CN112704552A (en) * 2021-01-07 2021-04-27 江西易通医疗器械有限公司 Disposable cervical dilatation sacculus pipe

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10305103A (en) * 1997-05-08 1998-11-17 Nippon Sherwood Medical Ind Ltd Catheter fixture
JP2015150251A (en) * 2014-02-14 2015-08-24 テルモ株式会社 Tube assembly for medical treatment
US20170296247A1 (en) * 2016-04-14 2017-10-19 Shao-Kang Hsueh Bone cement injection device
CN206045158U (en) * 2016-05-27 2017-03-29 心凯诺医疗科技(上海)有限公司 A kind of new sacculus dilating catheter
CN210612678U (en) * 2019-05-31 2020-05-26 广东康尔乐医疗器械有限公司 Uterine balloon stent with movable sheath
CN111760170A (en) * 2020-07-23 2020-10-13 赛诺医疗科学技术股份有限公司 A guide wire retraction device
CN112704552A (en) * 2021-01-07 2021-04-27 江西易通医疗器械有限公司 Disposable cervical dilatation sacculus pipe

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