CA1170941A - Anesthesia device - Google Patents
Anesthesia deviceInfo
- Publication number
- CA1170941A CA1170941A CA000393932A CA393932A CA1170941A CA 1170941 A CA1170941 A CA 1170941A CA 000393932 A CA000393932 A CA 000393932A CA 393932 A CA393932 A CA 393932A CA 1170941 A CA1170941 A CA 1170941A
- Authority
- CA
- Canada
- Prior art keywords
- holding member
- syringe
- cannula
- barrel
- length
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
ANESTHESIA DEVICE
ABSTRACT OF THE DISCLOSURE
An anesthesia device comprising, a syringe having a barrel defining a chamber, a tip extending distally from the barrel, and a plunger slidably received in the chamber, with a distal portion of the plunger sealingly engaging against an inner surface of the barrel. The device has a holding member having a generally cylindrical wall with an inner diameter slightly larger than an outer diameter of the syringe barrel, with an open proximal end, and with a length substantially the length of the barrel. The wall defines a cavity to closely receive the syringe barrel, with the holding member having a recess in a distal portion of the holding member to receive the syringe tip in sealing engagement when the syringe is fully inserted into the cavity of the holding member. The device has a cannula having a lumen, a proximal end attached to a distal end of the holding member, with the holding member recess in com-munication with the cannula lumen, and a plurality of openings in a distal portion of the cannula.
ABSTRACT OF THE DISCLOSURE
An anesthesia device comprising, a syringe having a barrel defining a chamber, a tip extending distally from the barrel, and a plunger slidably received in the chamber, with a distal portion of the plunger sealingly engaging against an inner surface of the barrel. The device has a holding member having a generally cylindrical wall with an inner diameter slightly larger than an outer diameter of the syringe barrel, with an open proximal end, and with a length substantially the length of the barrel. The wall defines a cavity to closely receive the syringe barrel, with the holding member having a recess in a distal portion of the holding member to receive the syringe tip in sealing engagement when the syringe is fully inserted into the cavity of the holding member. The device has a cannula having a lumen, a proximal end attached to a distal end of the holding member, with the holding member recess in com-munication with the cannula lumen, and a plurality of openings in a distal portion of the cannula.
Description
~ ~709~1 BACKGROUND OF THE INVENTION
The present invention relates to anesthesia devices.
sefore the present invention, it has been a common pro-cedure to apply an anesthetic drug to the trachea of a patient.
In the past, the proximal end of a cannula has been attached to the tip of a syringe containing the anesthetic drug. The cannula was then inserted into the patient's throat, and the syringe was pumped to apply the anesthetic drug to the trachea through the cannula. However, the cannula had a loose fitment with the syr-inge tip, thus possibly permitting the cannula to break loosefrom the syringe during use of the device. As a result, the cannula may become lost in the patient's throat.
_MMARY OF THE INVENTION
A principal feature of the present invention is the provision of an improved anesthesia device of simplified con-struction.
The anesthesia device comprises, a syringe having a barrel defining a chamber, a tip extending distally from the barrel, and a plunger slidably received in the chamber, with a distal portion of the plunger sealingly engaging against an inner surface of the barrel. The device has a holding member having a generally cylindrical wall with an inner diameter slightly larger than the outer diameter of the syringe barrel, with an open proximal end, and with a length substantially the length of the barrel. The holding member has a recess in a dis-tal portion of the holding member to receive the syringe tip.
The device has a cannula having a lumen, a proximal end attached to a distal end of the holding member, with the holding member recess in communication with the cannula lumen, and a plurality 1 1 70~4 1 of openings in a distal portion of the cannula.
A feature of the present invention is that the holding member wall defines a cavity to receive the syringe barrel.
Another feature of the invention is that the recess of the holding member receives the syringe tip in sealing engage-ment when the syringe is fully inserted into the holding member.
Yet another feature of the invention is that the syr-inge may be pumped to eject an anesthetic drug from the syringe through the cannula lumen into the patient.
Still another feature of the invention is that the cannula is securely attached to the holding member to prevent loss of the cannula during use of the device.
A further f~ature of the invention is that the cannula may be of one-piece construction with the holding member to pre-vent loss of the cannula during use of the device.
Further features will become more fully apparent in the following description of the embodiments of this invention and from the appended claims.
DESCRIPTION OF THE DRAWINGS
In the drawings:
Fig. 1 is a fragmentary elevational view of an anes-thesia device of the present invention;
Fig. 2 is a fragmentary sectional view of the anes-thesia device of Fig. l;
Fig. 3 is a fragmentary sectional view illustrating attachment of a syringe to a holding member of the device of Fig~ l; and Fig. 4 is a fragmentary sectional view of another embodiment of the holding member of the anesthesia device.
1 1 7~g41 DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to Figs. 1 and 2, there is shown an anesthesia device generally designated 10 comprising a syringe 12, a holding member 14, and a cannula 16. The syringe 12 com-prises a barrel 18 defining a chamber 20, and an elongated plunger 22 slidably received in the chamber 20. The plunger 22 has a plug 24 of elastic material, such as rubber, attached to a distal end 26 of the plunger 22, with the plug 24 sealingly engaging against an inner surface of the barrel 18. As shown, the syringe 12 has a hollow tip 28 extending distally frcm the barrel 18 of the syringe 12. In use, the plunger 22 is pumped to eject a liquid anesthetic drug from the chamber 20 through the tip 28. The syringe 12 may be made of any suitable material, such as glass or a suitable plastic.
The holding member 14 comprises an elongated generally cylindrical wall 30 having an inner diameter slightly larger than the outer diameter of the syringe barrel 18, with the wall 30 having a length substantially the length of the syringe bar-rel 18. As shown, the wall 30 has an open proximal end 32, and the wall 30 of the holding member 14 defines a cavity 34 to receive the syringe barrel 18. The holding member 14 has a tapered recess 36 in a distal portion 38 of the holding member 14, with the recess 36 receiving the syringe tip 28 in sealing engagement when the syringe 12 is fully inserted into the cavity 34 of the holding member 14, as shown in Fig. 3. With reference to Figs. 1 and 2, the holding member 14 has a pair of opposed elongated openings 40 extending substantially the length of the holding member wall 30, such that indicia on the syringe may be viewed through the openings 40 when the syringe 12 is inserted into the holding member 14. The holding member 14 also has a ~ ~ 7~94 1 hollow nipple 42 extending from the distal portion 38 of the holding member 14 for a purpose which will be described below.
The holding member 14 may be constructed from any suitable plas-tic material, such as polyethylene.
The cannula 16 has a lumen 44, and has a proximal end 46 received on the holding member nipple 42. The proximal end 46 of the cannula 16 may be secured to the nipple 42 by suitable means, such as by adhesive. The cannula 16 has a plurality of apertures 48 in a distal portion 50 of the cannula 16, with the apertures 48 communicating with the lumen 44 of the cannula 16.
The cannula 16 may be made of any suitable material, such as a plastic material or a malleable metal material.
In use, the holding member 14, cannula 16, and syringe 12 are supplied to the user, with the syringe 12 preferably being pre-filled with an anesthetic drug. The syringe 12 may have a cap (not shown) which closes the tip 28 of the syringe 12 in order to prevent loss of the anesthetic drug from the syringe 12.
The cap is removed from the syringe tip 28, and the syringe bar-rel 18 is inserted into the cavity 34 of the holding member 14, until the tip 28 of the syringe 12 is received in the recess 36 of the holding member 14. As previously discussed, the syringe tip 28 is snugly received in the recess 36 of the holding member 14, such that the tip 28 makes sealing engagement with the recess 36. Next, the cannula 16 is inserted into the throat of the patient, and the syringe plunger 22 is pumped to eject the anesthetic drug from the syringe chamber 20 into the lumen 44 of the cannula 16 and through the apertures 48 of the cannula 16 into the trachea of the patient, after which the device 10 is removed from the patient. Since the proximal end 46 of the cannula 16 is securely attached to the nipple 42 of the holding 1 1 ~Q94 1 member 14, the device 10 of the present invention prevents the possible loss of the cannula 16 in the patient's throat during use. Thus, the holding member 14 is held by the user during pumping of the syringe 12 in order to prevent loss of the cannula 16 during use of the device 10.
Another embodiment of the present invention is illus-trated in Fig. 4, in which like reference numerals designate like parts. In this embodiment, the cannula 16 is of one-piece construct.on with the holding member 14 in order to prevent loss of the cannula 16 in the throat of the patient during use. In this embodiment, the distal end portion 38 of the holding member - 14 defines the recess 36 to receive the tip of the syringe in sealing engagement when the syringe is inserted into the holding member 14. The holding member 14 and cannula 16 of Fig. 4 may be made of any s~itable plastic material, such as polyethylene.
In other respects, the device 10 of Fig. 4 operates in a manner as previously described in connection with the anesthesia device 10 of Figs. 1-3.
The foregoing detailed description is given for clear-ness of understanding only, and no unnecessary limitations shouldbe understood therefrom, as modifications will be obvious to those skilled in the art.
The present invention relates to anesthesia devices.
sefore the present invention, it has been a common pro-cedure to apply an anesthetic drug to the trachea of a patient.
In the past, the proximal end of a cannula has been attached to the tip of a syringe containing the anesthetic drug. The cannula was then inserted into the patient's throat, and the syringe was pumped to apply the anesthetic drug to the trachea through the cannula. However, the cannula had a loose fitment with the syr-inge tip, thus possibly permitting the cannula to break loosefrom the syringe during use of the device. As a result, the cannula may become lost in the patient's throat.
_MMARY OF THE INVENTION
A principal feature of the present invention is the provision of an improved anesthesia device of simplified con-struction.
The anesthesia device comprises, a syringe having a barrel defining a chamber, a tip extending distally from the barrel, and a plunger slidably received in the chamber, with a distal portion of the plunger sealingly engaging against an inner surface of the barrel. The device has a holding member having a generally cylindrical wall with an inner diameter slightly larger than the outer diameter of the syringe barrel, with an open proximal end, and with a length substantially the length of the barrel. The holding member has a recess in a dis-tal portion of the holding member to receive the syringe tip.
The device has a cannula having a lumen, a proximal end attached to a distal end of the holding member, with the holding member recess in communication with the cannula lumen, and a plurality 1 1 70~4 1 of openings in a distal portion of the cannula.
A feature of the present invention is that the holding member wall defines a cavity to receive the syringe barrel.
Another feature of the invention is that the recess of the holding member receives the syringe tip in sealing engage-ment when the syringe is fully inserted into the holding member.
Yet another feature of the invention is that the syr-inge may be pumped to eject an anesthetic drug from the syringe through the cannula lumen into the patient.
Still another feature of the invention is that the cannula is securely attached to the holding member to prevent loss of the cannula during use of the device.
A further f~ature of the invention is that the cannula may be of one-piece construction with the holding member to pre-vent loss of the cannula during use of the device.
Further features will become more fully apparent in the following description of the embodiments of this invention and from the appended claims.
DESCRIPTION OF THE DRAWINGS
In the drawings:
Fig. 1 is a fragmentary elevational view of an anes-thesia device of the present invention;
Fig. 2 is a fragmentary sectional view of the anes-thesia device of Fig. l;
Fig. 3 is a fragmentary sectional view illustrating attachment of a syringe to a holding member of the device of Fig~ l; and Fig. 4 is a fragmentary sectional view of another embodiment of the holding member of the anesthesia device.
1 1 7~g41 DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to Figs. 1 and 2, there is shown an anesthesia device generally designated 10 comprising a syringe 12, a holding member 14, and a cannula 16. The syringe 12 com-prises a barrel 18 defining a chamber 20, and an elongated plunger 22 slidably received in the chamber 20. The plunger 22 has a plug 24 of elastic material, such as rubber, attached to a distal end 26 of the plunger 22, with the plug 24 sealingly engaging against an inner surface of the barrel 18. As shown, the syringe 12 has a hollow tip 28 extending distally frcm the barrel 18 of the syringe 12. In use, the plunger 22 is pumped to eject a liquid anesthetic drug from the chamber 20 through the tip 28. The syringe 12 may be made of any suitable material, such as glass or a suitable plastic.
The holding member 14 comprises an elongated generally cylindrical wall 30 having an inner diameter slightly larger than the outer diameter of the syringe barrel 18, with the wall 30 having a length substantially the length of the syringe bar-rel 18. As shown, the wall 30 has an open proximal end 32, and the wall 30 of the holding member 14 defines a cavity 34 to receive the syringe barrel 18. The holding member 14 has a tapered recess 36 in a distal portion 38 of the holding member 14, with the recess 36 receiving the syringe tip 28 in sealing engagement when the syringe 12 is fully inserted into the cavity 34 of the holding member 14, as shown in Fig. 3. With reference to Figs. 1 and 2, the holding member 14 has a pair of opposed elongated openings 40 extending substantially the length of the holding member wall 30, such that indicia on the syringe may be viewed through the openings 40 when the syringe 12 is inserted into the holding member 14. The holding member 14 also has a ~ ~ 7~94 1 hollow nipple 42 extending from the distal portion 38 of the holding member 14 for a purpose which will be described below.
The holding member 14 may be constructed from any suitable plas-tic material, such as polyethylene.
The cannula 16 has a lumen 44, and has a proximal end 46 received on the holding member nipple 42. The proximal end 46 of the cannula 16 may be secured to the nipple 42 by suitable means, such as by adhesive. The cannula 16 has a plurality of apertures 48 in a distal portion 50 of the cannula 16, with the apertures 48 communicating with the lumen 44 of the cannula 16.
The cannula 16 may be made of any suitable material, such as a plastic material or a malleable metal material.
In use, the holding member 14, cannula 16, and syringe 12 are supplied to the user, with the syringe 12 preferably being pre-filled with an anesthetic drug. The syringe 12 may have a cap (not shown) which closes the tip 28 of the syringe 12 in order to prevent loss of the anesthetic drug from the syringe 12.
The cap is removed from the syringe tip 28, and the syringe bar-rel 18 is inserted into the cavity 34 of the holding member 14, until the tip 28 of the syringe 12 is received in the recess 36 of the holding member 14. As previously discussed, the syringe tip 28 is snugly received in the recess 36 of the holding member 14, such that the tip 28 makes sealing engagement with the recess 36. Next, the cannula 16 is inserted into the throat of the patient, and the syringe plunger 22 is pumped to eject the anesthetic drug from the syringe chamber 20 into the lumen 44 of the cannula 16 and through the apertures 48 of the cannula 16 into the trachea of the patient, after which the device 10 is removed from the patient. Since the proximal end 46 of the cannula 16 is securely attached to the nipple 42 of the holding 1 1 ~Q94 1 member 14, the device 10 of the present invention prevents the possible loss of the cannula 16 in the patient's throat during use. Thus, the holding member 14 is held by the user during pumping of the syringe 12 in order to prevent loss of the cannula 16 during use of the device 10.
Another embodiment of the present invention is illus-trated in Fig. 4, in which like reference numerals designate like parts. In this embodiment, the cannula 16 is of one-piece construct.on with the holding member 14 in order to prevent loss of the cannula 16 in the throat of the patient during use. In this embodiment, the distal end portion 38 of the holding member - 14 defines the recess 36 to receive the tip of the syringe in sealing engagement when the syringe is inserted into the holding member 14. The holding member 14 and cannula 16 of Fig. 4 may be made of any s~itable plastic material, such as polyethylene.
In other respects, the device 10 of Fig. 4 operates in a manner as previously described in connection with the anesthesia device 10 of Figs. 1-3.
The foregoing detailed description is given for clear-ness of understanding only, and no unnecessary limitations shouldbe understood therefrom, as modifications will be obvious to those skilled in the art.
Claims (5)
1. An anesthesia device, comprising:
a syringe having a barrel defining a chamber, a tip extending distally from the barrel, and a plunger slidably received in said chamber, with a distal portion of the plunger sealingly engaging against an inner surface of the barrel;
a holding member having a generally cylindrical wall with an inner diameter slightly larger than the outer diame-ter of the syringe barrel, with an open proximal end, and with a length substantially the length of said barrel, said wall defin-ing a cavity to closely receive the syringe barrel, said holding member having a recess in a distal portion of the holding member to receive the syringe tip in sealing engagement when the syr-inge is fully inserted into the cavity of the holding member;
a cannula having a lumen, a proximal end permanently attached to a distal end of the holding member with the holding member recess in communication with the cannula lumen, a plural-ity of openings in a distal portion of the cannula, a blunt dis-tal end, and a length sufficient to extend from outside the patient's body to the trachea.
a syringe having a barrel defining a chamber, a tip extending distally from the barrel, and a plunger slidably received in said chamber, with a distal portion of the plunger sealingly engaging against an inner surface of the barrel;
a holding member having a generally cylindrical wall with an inner diameter slightly larger than the outer diame-ter of the syringe barrel, with an open proximal end, and with a length substantially the length of said barrel, said wall defin-ing a cavity to closely receive the syringe barrel, said holding member having a recess in a distal portion of the holding member to receive the syringe tip in sealing engagement when the syr-inge is fully inserted into the cavity of the holding member;
a cannula having a lumen, a proximal end permanently attached to a distal end of the holding member with the holding member recess in communication with the cannula lumen, a plural-ity of openings in a distal portion of the cannula, a blunt dis-tal end, and a length sufficient to extend from outside the patient's body to the trachea.
2. The device of claim 1 wherein the cannula is of one-piece construction with the holding member.
3. The device of claim 1 wherein the holding member has a hollow nipple at a distal end of the holding member, and in which a proximal end of the cannula is received on the nipple.
4. The syringe of claim 1 wherein the holding member wall includes an elongated opening extending substantially the length of said wall.
5. The syringe of claim 1 wherein the holding member wall includes a pair of opposed elongated openings extending substantially the length of said wall.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US23091281A | 1981-02-02 | 1981-02-02 | |
| US230,912 | 1981-02-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1170941A true CA1170941A (en) | 1984-07-17 |
Family
ID=22867053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000393932A Expired CA1170941A (en) | 1981-02-02 | 1982-01-12 | Anesthesia device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1170941A (en) |
-
1982
- 1982-01-12 CA CA000393932A patent/CA1170941A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |