CN215915229U - Lacrimal point expansion needle head - Google Patents

Abstract

The utility model discloses a lacrimal punctum expansion needle head which comprises a needle core and a pintle, wherein a needle head protective sleeve is sleeved outside the needle core and detachably connected with the front end of the pintle; a guide tube is sleeved outside the needle core and is positioned in the needle head protective sleeve, and the guide tube is fixedly connected with the front end of the pintle; a white isolating plug is fixedly arranged in the pintle, a needle core seat is detachably arranged at the rear end of the pintle, the rear end of the needle core penetrates through the white isolating plug and then is fixedly connected with the needle core seat, and a needle core seat handle is further connected at the rear end of the needle core seat; a hand-held needle handle is fixedly arranged on the outer side of the pintle and is detachably connected with the needle core seat handle; the side wall of the pintle is also communicated with a flushing pipe. The lacrimal punctum can be further washed by only pulling out the needle core after the lacrimal punctum is dilated and without completely pulling out the whole needle head.

Description

Lacrimal point expansion needle head

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a punctum expanding needle head.

Background

The lacrimation and the purulence caused by the obstruction of the lacrimal passage are common ophthalmopathy of ophthalmology, and the incidence rate is higher by 1 to 2 percent. Although the lacrimal passage obstruction is not a serious eye disease, the purulence caused by the lacrimal passage obstruction can cause great influence on the work and life of people and can even cause serious complications (such as corneal ulcer, intraocular infection after internal eye surgery, and the like).

Adult secretes 0.5-1.0 ml tears every 16 hours, and these tears except moist eyeball and partial evaporation, remaining tears are all drained into the nasal cavity by the lacrimal passage. When the lacrimal passage is blocked and the drainage of the lacrimal fluid is not smooth due to various reasons, the lacrimal passage can not be normally led into the nasal cavity and overflows the eyelid to form the symptom of the lacrimation. The lacrimation not only brings discomfort to the patient and affects the beauty. Chronic irritant conjunctivitis, eczematous dermatitis of the lower eyelid and cheek regions can be caused by long-term tear immersion. The patients can cause the eyelid to turn outwards after wiping the tears for a long time, thereby aggravating the symptoms of the lacrimal overflow. When combined infection, purulent liquid overflows from the lacrimal passage, and acute attack is accompanied by red swelling and hot pain, and serious inflammation is accompanied by cellulitis, even the life is threatened.

Lacrimal passage obstruction can adopt a lacrimal passage dilator to fully dilate lacrimal punctum and is communicated with a lacrimal passage probe, but the lacrimal passage can be continuously flushed only by pulling out a needle after the lacrimal punctum is dilated by the conventional lacrimal passage dilation needle, and the lacrimal punctum has a certain contraction function, so that the lacrimal punctum is easy to contract after the lacrimal punctum is pulled out by the dilation needle, so that the flushing needle can not flush the dilated lacrimal punctum, and the treatment effect is influenced.

Disclosure of Invention

In view of the above problems, the present invention is directed to a punctum dilating needle which can further flush the lacrimal passage without completely pulling out the needle after dilating the punctum.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

a punctum expansion syringe needle comprises a needle core and a pintle, wherein a syringe needle protective sleeve is sleeved outside the needle core and is detachably connected with the front end of the pintle; the method is characterized in that: a guide tube is sleeved outside the needle core and is positioned in the needle head protective sleeve, and the guide tube is fixedly connected with the front end of the pintle;

a white isolating plug is fixedly arranged in the pintle, a needle core seat is detachably arranged at the rear end of the pintle, the rear end of the needle core penetrates through the white isolating plug and then is fixedly connected with the needle core seat, and a needle core seat handle is further connected at the rear end of the needle core seat;

a hand-held needle handle is fixedly arranged on the outer side of the pintle and is detachably connected with the needle core seat handle; the side wall of the pintle is also communicated with a flushing pipe.

Furthermore, one end of the flushing pipe is connected with the side wall of the pintle through a tee joint, the other end of the flushing pipe is provided with an empty needle nipple connecting piece, and the empty needle nipple connecting piece is provided with a protective cap.

Furthermore, the rear end of the handheld needle handle is connected with a first fixing plate, the front end of the needle core seat handle is provided with a second fixing plate, the first fixing plate is located above the second fixing plate, threaded holes are formed in positions, corresponding to the second fixing plate, of the first fixing plate, a fixing groove is formed in the top of the needle core seat, the fixing groove is located under the threaded holes, the threaded holes are connected with the fixing grooves through screws, and a rotating handle is arranged at the top of the screws.

Furthermore, a plurality of flushing holes are formed in the side wall of the guide pipe.

Furthermore, the hand-held needle handle is provided with an anti-skid bulge, and the needle core seat handle is provided with anti-skid grains.

Further, the needle point of the needle core is a blunt needle point.

Furthermore, the catheter is made of polyurethane.

The utility model has the beneficial effects that: compared with the prior art, the utility model has the improvement that,

1. according to the lacrimal punctum expansion needle, the guide pipe is sleeved outside the needle core, the needle core and the guide pipe are inserted into the lacrimal passage together to expand the lacrimal punctum during lacrimal punctum expansion, then the needle core is pulled out, the guide pipe is left at the position of the lacrimal punctum to continue to expand the lacrimal punctum, meanwhile, the flushing fluid is injected from the flushing pipe, the lacrimal passage can be flushed through the guide pipe, the lacrimal punctum is prevented from being contracted and cannot be effectively flushed after the needle core is pulled out, and therefore the treatment effect is improved.

2. According to the lacrimal punctum expanding needle, the needle core seat handle is arranged at the rear end of the needle core seat, when the needle core is pulled out, the needle core is pulled out through the needle core seat handle, the continuous use of the handheld needle handle is not influenced, and medical workers can continuously hold the handheld needle handle to perform subsequent lacrimal passage flushing operation; adopt detachable connected mode between handheld needle handle and the nook closing member handle, can guarantee the stability of nook closing member, can also be convenient for extract of nook closing member handle, nook closing member seat and nook closing member.

3. The needle point of the needle core of the lacrimal punctum expansion needle head is a blunt needle point, so that the lacrimal punctum expansion needle head can expand lacrimal punctum and does not damage tissues.

Drawings

Fig. 1 is a schematic view of the structure of the punctal dilation needle of the present invention.

FIG. 2 is an enlarged view of a portion A of FIG. 1 according to the present invention.

Fig. 3 is a schematic view of the punctum dilation needle of the present invention in dilating the punctum.

Fig. 4 is a schematic view of the punctal dilation needle of the utility model in use to irrigate the lacrimal passage.

Wherein: 1-needle core, 2-needle bolt, 3-needle head protective sleeve, 4-catheter, 5-white isolating plug, 6-needle core seat, 7-needle core seat handle, 8-hand needle handle, 9-flushing pipe, 10-tee joint, 11-empty needle nipple connecting piece, 12-protective cap, 13-first fixing plate, 14-second fixing plate, 15-threaded hole, 16-fixed groove, 17-screw rod, 18-rotating handle, 19-flushing hole, 20-anti-skid bump and 21-anti-skid line.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the drawings and the embodiments.

Referring to the attached drawings 1-4, the punctum expansion syringe needle comprises a needle core 1 and a pintle 2, wherein a needle head protective sleeve 3 is sleeved outside the needle core 1, the needle head protective sleeve 3 is detachably connected with the front end of the pintle 2, and the detachable connection mode between the needle head protective sleeve 3 and the pintle 2 adopts the detachable connection mode between the existing syringe needle head protective sleeve 3 and the pintle 2.

Further, the nook closing member 1 still overlaps outward and is equipped with pipe 4, pipe 4 is located in the syringe needle protective sheath 3, just pipe 4 with the front end bonding of pintle 2 is fixed, and when using nook closing member 1 to expand the punctum, pipe 4 expands the punctum along with nook closing member 1 together.

A white isolating plug 5 is fixedly arranged in the pintle 2, a needle core seat 6 is detachably arranged at the rear end of the pintle 2, the rear end of the needle core 1 penetrates through the white isolating plug 5 and then is fixedly connected with the needle core seat 6, and a hand-held needle handle 8 is fixedly arranged on the outer side of the pintle 2; the needle core seat 6 is plugged at the rear end of the pintle 2 when in use, and the needle core seat 6 can be pulled out from the rear end of the pintle 2 when the needle core 1 needs to be pulled out. Still communicate on the lateral wall of pintle 2 and be equipped with flush tube 9, the one end of flush tube 9 pass through tee bend 10 with the lateral wall of pintle 2 is connected, the other end of flush tube 9 is equipped with empty needle nipple connecting piece 11, be equipped with protective cap 12 on the empty needle nipple connecting piece 11.

It should be noted here that the overall structure of the stylet 1, the pintle 2, the catheter 4, the white isolating plug 5, the stylet holder 6, the handheld needle handle 8, the flushing tube 9, the tee joint 10, the hollow nipple connector 11 and the protective cap 12 in the present application is the same as the structure of the existing indwelling needle, and the connection manner between the structures is the same as the connection manner between the structures of the existing indwelling needle, and therefore, no further description is given in the present application.

Furthermore, a needle core seat handle 7 is fixedly bonded at the rear end of the needle core seat 6, and the handheld needle handle 8 is detachably connected with the needle core seat handle 7; specifically, a first fixing plate 13 is fixedly bonded to the rear end of the handheld needle handle 8, a second fixing plate 14 is fixedly bonded to the front end of the needle core holder handle 7, the first fixing plate 13 is located above the second fixing plate 14, threaded holes 15 are formed in positions, corresponding to the first fixing plate 13 and the second fixing plate 14, of the needle core holder 6, fixing grooves 16 are formed in the top of the needle core holder 6, the fixing grooves 16 are located right below the threaded holes 15, the threaded holes 15 are connected with the fixing grooves 16 through screws 17, a rotating handle 18 is arranged on the top of the screws 17, the screws 17 are screwed into the threaded holes 15, the bottom of the screws are screwed into the fixing grooves 16, the handheld needle handle 8 and the needle core holder handle 7 can be fixed, the phenomenon that the needle core 1 rotates due to rotation of the needle core holder handle 7 in the use process, expansion of punctum is affected, and after punctum is punctured and expanded is avoided, the handle 18 is rotated reversely, the screw 17 is screwed out from the threaded hole 15, the fixed limit between the handle 8 and the handle 7 is released, the handle 7, the needle core seat 6 and the needle core 1 can be pulled out from the pintle 2, and the catheter 4 is continuously left at the punctum position to play the expanding role.

Further, a plurality of flushing holes 19 have been seted up on the lateral wall of pipe 4, extract the back at nook closing member 1, pipe 4 continues to stay at punctum position department and plays the expansion effect to the punctum, at this moment, the empty needle that will irritate the flush fluid is connected in empty needle nipple connecting piece 11 department, the flush fluid washes the lacrimal passage through pipe 4, the in-process of washing, the flush fluid can flow out from flushing hole 19, wash whole lacrimal passage, white isolation stopper 5 can block in the external air admission pintle 2, can also avoid the flush fluid to overflow from pintle 2 simultaneously.

Further, be equipped with anti-skidding arch 20 on handheld needle handle 8, be equipped with anti-skidding line 21 on the stylet holder handle 7, carry out the in-process that the lacrimal punctum expansion was washed with the lacrimal passage at handheld needle handle 8, anti-skidding arch 20 can increase the frictional force between hand and the handheld needle handle 8, is extracting the in-process with stylet 1, and anti-skidding line 21 can increase the frictional force between hand and the stylet holder handle 7, and the medical personnel of being convenient for operate.

Furthermore, the needle point of the needle core 1 is a blunt needle point, which can not only expand the punctum, but also can not damage the tissue.

Further, the catheter 4 is made of polyurethane.

The working principle of the utility model is as follows: when the punctum is dilated, the handle 8 is held by hand, the needle head protective sleeve 3 is detached from the pintle 2, then the stylet 1 and the conduit 4 are inserted into the lacrimal passage of a patient together, the punctum is dilated, when the conduit 4 is inserted into the position of the punctum, the rotary handle 18 at the top of the screw rod 17 is rotated, the screw rod 17 is rotated out of the threaded hole 15, the fixed limit between the handle 8 and the stylet holder handle 7 is released, the stylet holder handle 7, the stylet holder 6 and the stylet 1 can be pulled out from the pintle 2, the conduit 4 is continuously left at the position of the punctum to play a role in dilation, and the lacrimal passage is continuously flushed; when the lacrimal passage is flushed, the protective cap 12 is detached from the empty needle nipple connecting piece 11, the empty needle filled with flushing fluid is connected to the empty needle nipple connecting piece 11, the flushing fluid flushes the lacrimal passage through the catheter 4, the flushing fluid can flow out of the flushing hole 19 in the flushing process to flush the whole lacrimal passage, the white isolating plug 5 can block outside air from entering the pintle 2, and meanwhile the flushing fluid can be prevented from overflowing from the pintle 2; after the irrigation is finished, the catheter 4 is pulled out from the lacrimal passage.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. A lacrimal punctum expansion needle comprises a needle core (1) and a pintle (2), wherein a needle head protective sleeve (3) is sleeved outside the needle core (1), and the needle head protective sleeve (3) is detachably connected with the front end of the pintle (2); the method is characterized in that: a guide tube (4) is further sleeved outside the needle core (1), the guide tube (4) is positioned in the needle head protective sleeve (3), and the guide tube (4) is fixedly connected with the front end of the pintle (2);

a white isolating plug (5) is fixedly arranged in the pintle (2), a needle core seat (6) is detachably arranged at the rear end of the pintle (2), the rear end of the needle core (1) penetrates through the white isolating plug (5) and then is fixedly connected with the needle core seat (6), and a needle core seat handle (7) is further connected at the rear end of the needle core seat (6);

a hand-held needle handle (8) is fixedly arranged on the outer side of the pintle (2), and the hand-held needle handle (8) is detachably connected with the needle core seat handle (7); the side wall of the pintle (2) is also communicated with a flushing pipe (9).

2. The punctal dilation needle of claim 1, wherein: one end of the flushing pipe (9) is connected with the side wall of the pintle (2) through a tee joint (10), the other end of the flushing pipe (9) is provided with an empty needle nipple connecting piece (11), and the empty needle nipple connecting piece (11) is provided with a protective cap (12).

3. The punctal dilation needle of claim 1, wherein: the rear end of handheld needle handle (8) is connected with first fixed plate (13), the front end of nook closing member handle (7) is equipped with second fixed plate (14), first fixed plate (13) are located the top of second fixed plate (14), just first fixed plate (13) with the position department that second fixed plate (14) correspond all is equipped with screw hole (15), the top of nook closing member seat (6) is equipped with fixed slot (16), fixed slot (16) are located under screw hole (15), screw hole (15) with connect through screw rod (17) between fixed slot (16), the top of screw rod (17) is equipped with rotatory handle (18).

4. The punctal dilation needle of claim 1, wherein: the side wall of the conduit (4) is provided with a plurality of flushing holes (19).

5. The punctal dilation needle of claim 1, wherein: the handheld needle handle (8) is provided with an antiskid bulge (20), and the needle core seat handle (7) is provided with antiskid grains (21).

6. The punctal dilation needle of claim 1, wherein: the needle point of the needle core (1) is a blunt needle point.

7. The punctal dilation needle of claim 1, wherein: the catheter (4) is made of polyurethane.

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