CN211484833U

CN211484833U - Endoscope injection needle

Info

Publication number: CN211484833U
Application number: CN201922377373.1U
Authority: CN
Inventors: 邵柯
Original assignee: Changzhou Jiuhong Medical Instrument Co ltd Changzhou Cn
Current assignee: Changzhou Jiuhong Medical Instrument Co ltd Changzhou Cn
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-09-15
Anticipated expiration: 2029-12-25

Abstract

The utility model provides a endoscopic injection needle, which comprises a front handle, a rear handle and an outer tube, wherein a plurality of limiting holes are arranged on the outer wall of the front handle along the axial direction of the front handle at intervals; the outer peripheral surface of the front end of the circumferential side wall of the rear handle is convexly provided with a boss, the position of the circumferential side wall of the rear handle, which corresponds to the boss, is hollowed with a yielding hole, and the boss is correspondingly matched and clamped with the limiting hole under the elastic deformation matching of the yielding hole; the abdicating hole is of a three-section structure along the axial section of the rear handle; the outer peripheral face of the rear end of the rear handle is further wrapped and fixed with a handle part, the tail end of the front handle is provided with a buckling part, when the rear handle moves forwards for the maximum distance, the front end of the handle part is pressed and abutted against the buckling part, and when the rear handle moves backwards for the maximum distance, the boss of the rear handle is clamped and connected with the front end face of the buckling part. The utility model has the advantages of reasonable design, can effectively avoid the back handle excessively to pull out when retrieving, the condition of syringe needle slippage is avoided taking place in the syringe needle location of being convenient for, scope injection easy operation, the security performance is high.

Description

Endoscope injection needle

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a scope syringe needle.

Background

The endoscopic injection needle is matched with an endoscope for use, and is used for performing endoscopic injection in the treatment process of esophageal and gastric varices and injection in the submucosa of the alimentary canal. In the scope syringe needle use, need carry out further improved design to current scope syringe needle, be convenient for when the syringe needle is released and is withdrawed, in time with syringe needle position fixation, avoid taking place the condition of syringe needle slippage. In order to facilitate the pushing out and withdrawing of the needle head to limit, the endoscope injection needle needs to be further improved and designed so as to meet the clinical use requirement.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to overcome the deficiency of the prior art, the utility model provides a can correspond the syringe needle and release and carry out the rigidity when withdrawing, can effectively spacing back handle simultaneously, avoid a scope syringe needle that back handle excessively pulled out when retrieving.

The utility model provides a technical scheme that its technical problem adopted is: an endoscopic injection needle comprises a front handle, a rear handle and an outer tube, wherein the front end of the outer tube is provided with a needle head, the front handle and the rear handle are both of an internal hollow structure, the outer tube axially penetrates through the front handle, and the tail end of the outer tube is fixed with the front end of the rear handle; the outer wall of the front handle is provided with a plurality of limiting holes at intervals along the axial direction of the front handle; the outer peripheral surface of the front end of the circumferential side wall of the rear handle is convexly provided with a boss, the position of the circumferential side wall of the rear handle, corresponding to the boss, is hollowed with a yielding hole, and the boss is correspondingly matched and clamped with the limiting hole under the elastic deformation matching of the yielding hole; the abdicating hole is of a three-section structure along the axial section of the rear handle, the three-section structure comprises a rectangle and right-angled trapezoids symmetrically connected to two sides of the rectangle respectively, and the longer bottom edge of each right-angled trapezoid is overlapped with the side edge of the rectangle; the rear handle rear end outer peripheral face on still the parcel be fixed with handle portion, preceding handle tail end buckle portion has, when the back handle moves the maximum distance forward, handle portion front end offsets with the crimping of buckle portion, when the back handle moves the maximum distance backward, the boss of back handle is blocked by the preceding terminal surface joint of buckle portion.

In the above scheme, when syringe needle or recovery syringe needle are released to needs, operating personnel only need press the boss, the boss drives the hole of stepping down and takes place deformation, boss and spacing hole unblock, can carry out relative displacement under operating personnel operates between front handle and the back handle this moment, the release of accomplishing the syringe needle or retrieve, target in place when the syringe needle position, the boss also corresponds when moving the spacing hole that corresponds, because the boss no longer receives the pressure, the hole of stepping down resumes, the boss with correspond spacing hole cooperation joint, accomplish the locking of front handle and back handle position, the syringe needle locking.

Furthermore, the outer wall of the front handle is provided with at least four limiting holes at intervals along the axial direction of the front handle, wherein the limiting hole at the longest position of the needle head is positioned at the forefront, the limiting hole at the initial position of the needle head is positioned at the rearmost, and the limiting hole at the adjustable position of the needle head is positioned in the middle.

Furthermore, in order to further protect the outer tube, the front end of the front handle is fixed with a protective sleeve, and the outer tube penetrates through and extends out of the front end of the protective sleeve.

Preferably, in order to facilitate the cooperation of the index finger and the thumb of an operator to separate or clamp the boss from the limiting hole through pinching and releasing operations, two bosses are symmetrically distributed at the front end of the circumferential side wall of the rear handle along the axis center of the rear handle, and a abdicating hole is correspondingly arranged below each boss; the front handle is also provided with two groups of limiting holes which are symmetrically distributed along the axis of the front handle, and the limiting holes on the same radial section are respectively matched and clamped with the lug boss. The boss on one side corresponds to the forefinger, the boss on one side corresponds to the thumb, and the positions of the two sides are symmetrical, so that the pinching and releasing operation of an operator is facilitated.

The beneficial effects of the utility model are that, the utility model provides a pair of scope syringe needle, structural design is reasonable, has designed spacing hole on the handle in the front, and it is spacing to cooperate through the boss on spacing hole and the back handle, has designed clamping part simultaneously, avoids the back handle excessively to pull out when retrieving, and the syringe needle location of being convenient for avoids taking place the condition of syringe needle slippage, scope injection easy operation, and the security performance is high.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of the preferred embodiment of the present invention showing the needle in the initial position (the needle is not shown).

Fig. 2 is a schematic view of the needle of the preferred embodiment of the present invention in its longest position (the needle is not shown).

Fig. 3 is a schematic structural view of the rear handle in the preferred embodiment of the present invention.

In the figure, the device comprises an outer tube 1, a protective sleeve 3, a front handle 4, a buckling part 5, a handle part 6, a rear handle 7, a limiting hole 8, a yielding hole 9 and a boss.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

An endoscopic injection needle as shown in fig. 1 to 3 is a preferred embodiment of the present invention, and comprises a front handle 3, a rear handle 6 and an outer tube 1, wherein the front end of the outer tube 1 is provided with a needle. Preceding handle 3 and back handle 6 be inside hollow structure, outer tube 1 axial run through the setting in preceding handle 3, and outer tube 1 tail end is fixed with back handle 6 front end. In order to further protect the outer tube 1, a protecting sleeve 2 is fixed at the front end of the front handle 3, and the outer tube 1 penetrates through and extends out of the front end of the protecting sleeve 2.

The outer wall of the front handle 3 is provided with a plurality of limiting holes 7 at intervals along the axial direction of the front handle 3. In practical design, the outer wall of the front handle 3 is provided with four limiting holes 7 at intervals along the axial direction of the front handle 3, wherein the limiting hole 7 at the longest position of the needle head is positioned at the forefront, the limiting hole 7 at the initial position of the needle head is positioned at the rearmost, and the limiting hole 7 at the adjustable position of the needle head is positioned in the middle.

A boss 9 is protruded out of the outer peripheral surface of the front end of the circumferential side wall of the rear handle 6, a yielding hole 8 is hollowed out at the position, corresponding to the boss 9, of the circumferential side wall of the rear handle 6, and the boss 9 is correspondingly matched and clamped with the limiting hole 7 under the elastic deformation matching of the yielding hole 8; the hole of stepping down 8 be three-section structure along 6 axial cross-sections of back handle, this three-section structure includes the rectangle and the right trapezoid of symmetric connection respectively in the rectangle both sides, and the longer base of right trapezoid overlaps with the rectangle side.

In order to release and when withdrawing at the syringe needle, carry on spacingly to back handle 6, avoid back handle 6 can not excessively be pulled out when retrieving, 6 rear end outer peripheral faces of back handle on still the parcel be fixed with

handle portion

5, 3 tail ends of preceding handle have buckle portion 4, when back handle 6 removes the maximum distance forward, 5 front ends of handle portion and 4 crimping offsets of buckle portion, when back handle 6 removes the maximum distance backward, the boss 9 of back handle 6 is blocked by buckle portion 4 preceding terminal surface joint. In actual design, the center of the buckling part 4 is also provided with a hole for the rear handle 6 to penetrate through, the maximum outer edge diameter of the boss 9 is smaller than the inner diameter of the buckling part 4, when the rear handle 6 moves backwards for the maximum distance, the boss 9 can be clamped on the front end face of the buckling part 4, and the rear handle 6 is prevented from being pulled out excessively when being recovered.

In the above scheme, boss 9 and the structural design of hole of stepping down 8 owing to the existence of hole of stepping down 8, for the space of stepping down of boss 9 provides, receive the back of pressing at boss 9, can extrude and step down hole 8 and take place elastic deformation, provide the space for unblock and locking. When syringe needle or recovery syringe needle are released to needs, operating personnel only need press boss 9, boss 9 drives the hole 8 that steps down and takes place deformation, boss 9 and spacing 7 unblocks in hole, can carry out relative displacement under operating personnel operation between front handle 3 and the back handle 6 this moment, accomplish the release or the recovery of syringe needle, target in place when the syringe needle position, boss 9 also corresponds when moving the spacing hole 7 that corresponds, because boss 9 no longer is pressed, hole 8 that steps down resumes, boss 9 with correspond spacing 7 cooperation joints in hole, accomplish the locking of front handle 3 and back handle 6 position, the syringe needle locking.

In actual design, the operation convenience of operating personnel is considered, the boss 9 and the unlocking or clamping locking of the limiting hole 7 are facilitated, and the operation gesture is set to be that the index finger of the operating personnel is matched with the thumb to separate the boss 9 from the limiting hole 7 or clamp the boss and the limiting hole 7 through pinching and putting operations. Therefore, two bosses 9 are symmetrically distributed at the front end of the circumferential side wall of the rear handle 6 along the axis center, and a yielding hole 8 is correspondingly arranged below each boss 9; two groups of limiting holes 7 are symmetrically distributed on the front handle 3 along the axis of the front handle, and the limiting holes 7 on the same radial section are respectively matched and clamped with a boss 9. The boss 9 on one side corresponds to the forefinger, the boss 9 on one side corresponds to the thumb, and the positions of the two sides are symmetrical, so that the pinching and placing operation of an operator is facilitated.

An endoscope syringe needle of so design, structural design is reasonable, spacing hole 7 has been designed in the front on handle 3, it is spacing to cooperate through boss 9 on spacing hole 7 and the back handle 6, the joint locking and the unblock of the syringe needle location of being convenient for break away from, and correspond buckle part 4 of having designed, avoid back handle 6 excessively to pull out when retrieving, the syringe needle location of being convenient for avoids taking place the condition of syringe needle slippage, scope injection easy operation, the security performance is high.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides an endoscopic injection needle, includes front handle (3), back handle (6) and outer tube (1), outer tube (1) front end has the syringe needle, front handle (3) and back handle (6) be inside hollow structure, its characterized in that: the outer tube (1) is axially arranged in the front handle (3) in a penetrating manner, and the tail end of the outer tube (1) is fixed with the front end of the rear handle (6); a plurality of limiting holes (7) are formed in the outer wall of the front handle (3) at intervals along the axial direction of the front handle (3); a boss (9) is protruded out of the outer peripheral surface of the front end of the circumferential side wall of the rear handle (6), a position, corresponding to the boss (9), of the circumferential side wall of the rear handle (6) is hollowed to form a yielding hole (8), and the boss (9) is correspondingly matched and clamped with the limiting hole (7) under the elastic deformation matching of the yielding hole (8); the abdicating hole (8) is of a three-section structure along the axial section of the rear handle (6), the three-section structure comprises a rectangle and right-angled trapezoids symmetrically connected to the two sides of the rectangle respectively, and the longer bottom edge of each right-angled trapezium is overlapped with the side edge of the rectangle; the rear end outer peripheral face of the rear handle (6) is wrapped and fixed with a handle part (5), the tail end of the front handle (3) is provided with a clamping part (4), when the rear handle (6) moves forwards for the maximum distance, the front end of the handle part (5) is pressed and pressed against the clamping part (4), when the rear handle (6) moves backwards for the maximum distance, the boss (9) of the rear handle (6) is clamped by the front end face of the clamping part (4).

2. An endoscopic injection needle according to claim 1, wherein: the outer wall of the front handle (3) is provided with at least four limiting holes (7) at intervals along the axial direction of the front handle (3), wherein the limiting hole (7) at the longest position of the needle head is positioned at the forefront, the limiting hole (7) at the initial position of the needle head is positioned at the rearmost, and the limiting hole (7) at the adjustable position of the needle head is positioned in the middle.

3. An endoscopic injection needle according to claim 1, wherein: the front handle (3) front end be fixed with protecting pipe (2), outer tube (1) run through and stretch out protecting pipe (2) front end.

4. An endoscopic injection needle according to claim 1, wherein: two bosses (9) are symmetrically distributed at the front end of the circumferential side wall of the rear handle (6) along the axis center, and a yielding hole (8) is correspondingly arranged below each boss (9); the front handle (3) is correspondingly provided with two groups of limiting holes (7) which are also distributed along the axis in a central symmetry way, and the limiting holes (7) on the same radial section are respectively matched and clamped with the lug boss (9).