WO2006062049A1 - ピンセット - Google Patents
ピンセット Download PDFInfo
- Publication number
- WO2006062049A1 WO2006062049A1 PCT/JP2005/022271 JP2005022271W WO2006062049A1 WO 2006062049 A1 WO2006062049 A1 WO 2006062049A1 JP 2005022271 W JP2005022271 W JP 2005022271W WO 2006062049 A1 WO2006062049 A1 WO 2006062049A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tweezers
- blood
- tip
- groove
- discharge groove
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/30—Surgical pincettes without pivotal connections
Definitions
- the present invention relates to tweezers used in ophthalmic surgery and the like.
- this type of tweezers has a bifurcated tweezers main body having elasticity and a pair of tip portions formed for gripping, and is gripped by a tip portion that powers ocular tissues such as sutures and conjunctiva. It is now possible to do this! (For example, Patent Document 1 and Patent Document 2).
- Patent Document 1 Japanese Utility Model Publication No. 63-147266
- Patent Document 2 Japanese Utility Model Publication No. 64-009065
- the present invention has been made to solve the above-described problems, and can accurately grasp a suture thread, an eye tissue, and the like, and can prevent a blood clot from being generated at a distal end portion.
- the purpose is to provide tweezers.
- the invention of claim 1 is characterized in that a fork tweezer main body and a wall thickness provided with a step on the inner surface side of each tip of the tweezer main body and having a flat surface.
- the tweezers are provided with a straight blood discharge groove that opens at the stepped surface rising from the inner surface of the tip and extends to the tip.
- tissues such as a sewing thread and conjunctiva can be grasped by the thick portions provided at the tip portions of the tweezer main body.
- this blood flows into the blood discharge groove provided on the surface of the thick part, and the opener of the stepped surface also flows out to the inner surface side of the tip part. . Therefore, the blood hardly clots and sticks to the surface of the thick part.
- the invention of claim 2 is the tweezers of claim 1, wherein the tip of the blood discharge groove is opened at the tip of the thick portion.
- blood that has flowed into the blood draining groove also flows out from the opening at the leading end, which is just the opening at the step surface.
- the invention of claim 3 is the tweezers of claim 1, wherein the through hole that opens to the outer surface of the tip is drilled in a portion that is located at the bottom of the blood discharge groove and located on the tip side.
- the configuration is as follows.
- the invention of claim 4 is the tweezers according to claim 1! And claim 3, wherein the bottom of the blood discharge groove is removed and the blood discharge groove is formed at the tip portion. The structure is opened on the outer surface.
- the invention of claim 5 is the tweezers of claim 1! And claim 4, wherein a plurality of blood draining grooves are arranged in parallel on the surface of the thick portion.
- the invention of claim 6 is configured such that in the tweezers according to any one of claims 1 to 5, the groove width of the blood discharge groove is set narrower than the thread diameter of the suture thread.
- the suture does not enter the blood discharge groove when the suture is grasped.
- the invention of claim 7 has a structure in which the bottom portion of the blood draining groove is rounded in the tweezers described in claims 1 and 6 and any one of claims 6 and 6.
- the bottom of the blood draining groove is rounded so that the blood in the blood draining groove flows smoothly through the bottom.
- the invention of claim 8 is the tweezers according to claim 1! And claim 7, wherein fine unevenness for preventing slip is formed on the surface of the thick portion.
- the forceful structure increases the gripping force as well as the tissue such as the suture thread and the conjunctiva can be securely gripped by the thick part.
- the tweezers of the present invention blood adhering to the surface of the thick portion flows into the blood discharge groove, and the opening force is discharged, thereby coagulating the blood.
- the clumps can be prevented from sticking to the thick part, so that the desired gripping force can be maintained on the suture and can be accurately grasped without damaging the tissue such as the conjunctiva. If you can, there is an excellent effect.
- the blood that has flowed into the blood draining groove flows out from the tip side that is not just the opening of the stepped surface, thereby enhancing the blood draining effect. be able to.
- the blood flowing into the blood discharge groove is immediately discharged to the outside from the opening on the bottom side, so that the blood discharge effect is further improved.
- the blood in the blood draining groove smoothly flows through the bottom, so that the blood draining effect is further improved.
- tissue such as sutures and conjunctiva can be reliably secured. And it can be gripped strongly.
- FIG. 1 is a perspective view showing tweezers according to a first embodiment of the present invention.
- FIG. 2 is a plan view of tweezers.
- FIG. 3 is a side view of the tweezers.
- FIG. 4 is a plan view of a platform showing a blood discharge groove.
- FIG. 5 is a cross-sectional view taken along the line AA in FIG.
- FIG. 6 is a cross-sectional view taken along the line BB in FIG.
- FIG. 7 Explanatory drawing of pterygium resection and autologous conjunctiva transplantation, FIG. 7 (a) shows the pterygium resection operation, and FIG. 7 (b) shows the self-conjunctival graft suturing operation.
- FIG. 8 is a plan view showing a relationship between a suture thread and a blood discharge groove.
- FIG. 9 is a side view for explaining a malfunction due to blood coagulation.
- FIG. 10 is a perspective view showing blood discharging action by a blood discharging groove.
- FIG. 11 is a cross-sectional view showing a state where blood is concentrated on the bottom of the blood discharge groove.
- FIG. 12 is a plan view showing a main part of a tweezers according to a second embodiment of the present invention.
- FIG. 13 is a sectional view taken along the line CC in FIG.
- FIG. 14 is a plan view showing a main part of a tweezers according to a third embodiment of the present invention.
- FIG. 15 is a sectional view taken along the line DD in FIG.
- FIG. 16 is a plan view showing a main part of a tweezers according to a fourth embodiment of the present invention.
- FIG. 17 is a cross-sectional view taken along line EE in FIG.
- FIG. 18 is a plan view showing a main part of a tweezers according to a fifth embodiment of the present invention.
- FIG. 19 is a plan view showing a first modification of the second embodiment.
- FIG. 20 is a plan view showing a second modification of the second embodiment.
- FIG. 21 is a plan view showing a modification of the third embodiment.
- FIG. 1 is a perspective view showing a tweezers according to a first embodiment of the present invention
- FIG. 2 is a plan view of the tweezers
- FIG. 3 is a side view of the tweezers.
- the tweezers 1 of this embodiment includes a bifurcated tweezers main body 2 and platforms 3 and 3 as thick portions formed at the tip of the tweezers main body 2. .
- the tweezer main body 2 is formed by joining a pair of arm rods 20, 21 to the base side (right side in FIG. 1), and joining these arm rods 20, 21 into a bifurcated shape.
- the tweezers body 2 has a springing property.
- Each armband 20 (21) is composed of a central operation part 20a (21a) and a tapered tip part 20b (21b), and when the user operates the operation parts 20a, 21a with both fingers, It is now possible to open and close parts 20b and 21b!
- a stopper 20c for restricting the closing operation of the tip portions 20b, 21b is provided on the inner surface of the armband 20.
- the platforms 3 and 3 are formed so as to face each other on the inner surface side of the tip portions 20b and 21b in the tweezer main body 2 having the above structure.
- Each platform 3 is formed in a step shape on the inner surface side of the tip end portion 21b (20b), and its surface is formed flat, as shown in a partially enlarged view surrounded by a broken line. That is, the platform 3 has a flat surface 30 and a step surface 31 rising from the inner surface of the tip end portion 21b (20b).
- a blood discharge groove 4 is formed in the platform 3 as described above.
- FIG. 4 is a plan view of the platform 3 showing the blood draining groove 4
- FIG. 5 is a cross-sectional view taken along the line AA in FIG. 4
- FIG. 6 is a cross-sectional view taken along the line B-B in FIG. It is.
- the blood discharge groove 4 is a straight groove extending to the distal end side (left side in FIG. 4) of the distal end portion 20b (21b).
- the blood draining groove 4 is tapered in a plan view, is closed on the distal end 40 side, and is open on the proximal end side. That is, the blood discharge groove 4 has an opening 41 a in the step surface 31 of the platform 3.
- the diameter R of the opening 41a is set to be equal to or smaller than the suture thread diameter, which will be described later, and the entire groove width of the blood draining groove 4 is narrower than the suture thread diameter.
- the bottom 42 of the blood draining groove 4 is rounded in an arc shape.
- FIG. 7 is an explanatory diagram of pterygium resection and autologous conjunctival transplantation.
- FIG. 7 (a) shows pterygium excision work
- FIG. 7 (b) shows self-conjunctival graft suturing work.
- FIG. 8 is a plan view showing the relationship between the suture thread 100 and the blood discharge groove 4.
- the tweezers 310 when excising the wing piece 310 covering the cornea 201 of the eyeball 200, the tweezers 310 is placed between the tip portions 20b and 21b of the tweezers 1 in the state where the wing piece 310 is disposed. 1. Press the operating parts 20a, 21a of 1 with your finger. As a result, the platforms 3 and 3 of the tip portions 20b and 21b are in a state of gripping the wing-like piece 310. In this state, the wing piece 310 is cut with scissors (not shown), and the cut wing piece 310 is taken out with the tweezers 1.
- the diameter R of the widest opening 41a is set to be equal to or smaller than the thread diameter of the suture thread 100. 4 There is no such thing as going inside and getting stuck. That is, by using the tweezers 1 of this embodiment, it is possible to easily operate the suture thread 100 that does not care about the hooking force of the blood discharge groove 4 on the suture thread 100.
- FIG. 9 is a side view for explaining a malfunction due to blood coagulation
- FIG. 10 is a perspective view showing the blood discharging action by the blood discharging groove 4
- FIG. 6 is a cross-sectional view showing a state of being concentrated on the bottom 42 of the working groove 4.
- a straight blood discharge groove 4 is engraved on the surface 30 of each platform 3 for blood discharge. Since the groove 4 is open at the base end side step surface 31, as shown by the arrow in FIG. 10, when blood b adheres to the surface 30, most of the blood b becomes a blood discharge groove. Flows into 4. Then, the blood b accumulated in the blood discharge groove 4 flows out from the opening 41a of the blood discharge groove 4 to the inner surface 20e (21e) side of the tip 20b (21b). Therefore, the solidified mass B as shown in FIG.
- the tweezers 1 of this example even if blood b adheres to the surface 30, Since the liquid is immediately discharged through the liquid discharge groove 4, the pulling force of the platforms 3 and 3 due to the viscosity of the blood b is also reduced. As a result, the opening / closing operation of the tip portions 20b, 21b of the tweezers 1 is facilitated. Since it can also prevent sticking to the surface 30 of the coagulum B, it can maintain a desired gripping force on the eye tissue such as the winged piece 310 and the suture 100, and can also be used for conjunctiva and the like. It can be accurately grasped without damaging the eye tissue.
- the blood b has a side force of the blood discharge groove 4 as shown in FIG. It smoothly flows into the bottom 42, concentrates at the center of the bottom 42, and is brought together by the surface tension. As a result, the blood b in the blood discharge groove 4 flows smoothly and quickly through the bottom 42 and is discharged from the opening 41a.
- the blood b diffuses, the flow becomes worse, and it may be dried in a short time. That is, according to the tweezers 1 of this embodiment, it is possible to further improve the blood draining effect in the blood draining groove 4 and to wash out the blood b in the blood draining groove 4 easily and quickly. Can be done.
- FIG. 12 is a plan view showing the main part of the tweezers according to the second embodiment of the present invention
- FIG. 13 is a sectional view taken along the line CC in FIG.
- the force is such that the tip 40 side of the blood discharge groove 4 formed in the platform 3 is closed.
- the tweezers of this embodiment are as shown in Figs.
- the tip 40 of the blood draining groove 4 extends to the tip of the platform 3 and is opened.
- the blood that has flowed into the blood discharge groove 4 is not only from the opening 41a of the step surface 31. It also flows out from the tip 40 of the blood draining groove 4. As a result, the blood discharge effect is further enhanced.
- FIG. 14 is a plan view showing the main part of the tweezers according to the third embodiment of the present invention
- FIG. 15 is a sectional view taken along the line DD in FIG.
- the force is such that the blood discharge groove 4 formed in the platform 3 is closed on the tip 40 side. As shown in FIG. 43 is drilled on the tip 40 side.
- the through-hole 43 is drilled in a portion of the bottom portion 42 located on the distal end 40 side of the blood discharge groove 4, and the outer surface of the distal end portion 2 (3 ⁇ 4 (211 ) ). 20 (1 (opens to 21 (1).
- the blood flow into the blood discharge groove 4 is allowed to flow into the blood discharge groove 4 by making the front end 40 side, which is formed only by the base end 41 of the blood discharge groove 4, opened by the through hole 43. It also flows out from the through-hole 43 of the blood discharge groove 4 only from the opening 4 la. As a result, the blood draining effect is further enhanced.
- FIG. 16 is a plan view showing the main part of the tweezers according to the fourth embodiment of the present invention
- FIG. 17 is a cross-sectional view taken along the line EE in FIG.
- the force is such that the through-hole 43 is formed on the distal end 40 side of the blood discharge groove 4.
- the tweezers of this embodiment as shown in Figs. Remove the meat at the bottom 42 of the blood discharge groove 4 and connect the blood discharge groove 4 to the outer surface 20d (20d (21b)
- FIG. 18 is a plan view showing the main part of the tweezers according to the fifth embodiment of the present invention.
- the force is such that one blood draining groove 4 is formed on the platform 3.
- the tweezers of this embodiment has two blood draining grooves as shown in FIG.
- the grooves 4-1 and 4-2 were arranged side by side on the surface 30 of the platform 3.
- the two blood discharge grooves 4-1 and 4-2 have the same shape, and the width of each groove is set to approximately 1Z3 of the blood discharge groove 4 of the first embodiment.
- the tip 40 of the blood discharge groove 4 extends to the front end of the platform 3 and is opened.
- Tweezers having a configuration in which the bottom 42 extending from the end 40 to the base 41 is pulled out to the outer surface side of the tip 20b (21b) is also included in the scope of the invention as a modification of the second embodiment.
- a tweezers having two blood discharge grooves 4-3 and 4-4 each having an open front end is proposed. This tweezers is also included in the scope of the invention.
- a pair of tweezers having two blood discharge grooves 4 5, 4-6 each having a through hole 43 formed at the tip side thereof is proposed. This is also included in the scope of the invention.
- the tweezers of the tweezers shown in FIGS. 20 and 21 with the bottoms of the blood discharge grooves 4-3-4-6 removed are also included in the scope of the invention.
- the surface 30 of the platform 3 is flat. However, the surface 30 may be formed with rough unevenness for preventing slippage. As a result, not only can the suture 100 and the conjunctiva be securely gripped by the platform 3, but also the gripping force can be increased.
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- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006546670A JPWO2006062049A1 (ja) | 2004-12-07 | 2005-12-05 | ピンセット |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004-354048 | 2004-12-07 | ||
JP2004354048 | 2004-12-07 |
Publications (1)
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WO2006062049A1 true WO2006062049A1 (ja) | 2006-06-15 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/022271 WO2006062049A1 (ja) | 2004-12-07 | 2005-12-05 | ピンセット |
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JP (1) | JPWO2006062049A1 (ja) |
WO (1) | WO2006062049A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20160124759A (ko) * | 2014-02-24 | 2016-10-28 | 노바르티스 아게 | 접착 최적화된 에지 상태를 갖는 외과용 기기 |
WO2019131344A1 (ja) * | 2017-12-25 | 2019-07-04 | 謙一 松村 | 医療用鑷子 |
WO2023149230A1 (ja) * | 2022-02-02 | 2023-08-10 | キヤノン株式会社 | 放射線撮影装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS621864U (ja) * | 1985-06-18 | 1987-01-08 | ||
JPH0833649A (ja) * | 1994-07-25 | 1996-02-06 | Takayuki Ishizawa | 歯科用ピンセット |
JP2004216494A (ja) * | 2003-01-14 | 2004-08-05 | Tekkusu Kk | 合成樹脂製ピンセット |
JP2004298636A (ja) * | 2003-03-31 | 2004-10-28 | Codman & Shurtleff Inc | 分離可能なクロスバーを備えた骨鉗子 |
-
2005
- 2005-12-05 JP JP2006546670A patent/JPWO2006062049A1/ja active Pending
- 2005-12-05 WO PCT/JP2005/022271 patent/WO2006062049A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS621864U (ja) * | 1985-06-18 | 1987-01-08 | ||
JPH0833649A (ja) * | 1994-07-25 | 1996-02-06 | Takayuki Ishizawa | 歯科用ピンセット |
JP2004216494A (ja) * | 2003-01-14 | 2004-08-05 | Tekkusu Kk | 合成樹脂製ピンセット |
JP2004298636A (ja) * | 2003-03-31 | 2004-10-28 | Codman & Shurtleff Inc | 分離可能なクロスバーを備えた骨鉗子 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20160124759A (ko) * | 2014-02-24 | 2016-10-28 | 노바르티스 아게 | 접착 최적화된 에지 상태를 갖는 외과용 기기 |
KR102383717B1 (ko) * | 2014-02-24 | 2022-04-05 | 알콘 인코포레이티드 | 접착 최적화된 에지 상태를 갖는 외과용 기기 |
WO2019131344A1 (ja) * | 2017-12-25 | 2019-07-04 | 謙一 松村 | 医療用鑷子 |
JP2019111225A (ja) * | 2017-12-25 | 2019-07-11 | 謙一 松村 | 医療用鑷子 |
WO2023149230A1 (ja) * | 2022-02-02 | 2023-08-10 | キヤノン株式会社 | 放射線撮影装置 |
Also Published As
Publication number | Publication date |
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JPWO2006062049A1 (ja) | 2008-06-05 |
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