Injection device for the invertebral disc
First Claim
1. An injection device for injecting a substance into an intervertebral disc, the injection device comprising:
- a tubular sheath, a first elastic needle having a straightened position and a curved position, said straightened position being elastically straightened within said tubular sheath, and said curved position being elastically curved and located at least partially outside said tubular sheath, an actuator to moved said first elastic needle between said straightened position and said curved position, and a syringe fillable with the substance and in fluid communication with a distal end of said first elastic needle.
0 Assignments
0 Petitions
Accused Products
Abstract
The intervertebral disc is avascular. With aging, calcified layers occlude the cartilaginous endplates, blocking the diffusion of nutrients and oxygen into the avascular disc. Under anaerobic condition, excessive production of lactic acid irritates nerves and further hinders transport of sodium sulfate essential for biosynthesis of the water retaining and load sustaining sulfated glycosaminoglycans. As the result of acid irritation and load shifting to facet joints, pain ensues. Through the pedicle, calcified endplate is punctured by a well-supported and elastically curved needle, injecting antacid to neutralize the lactic acid and enhance transport of sodium sulfate into the shielded discs between ilia. Disc filler or nutrients can also be injected through the curved needle into the degenerated disc.
142 Citations
37 Claims
-
1. An injection device for injecting a substance into an intervertebral disc, the injection device comprising:
-
a tubular sheath, a first elastic needle having a straightened position and a curved position, said straightened position being elastically straightened within said tubular sheath, and said curved position being elastically curved and located at least partially outside said tubular sheath, an actuator to moved said first elastic needle between said straightened position and said curved position, and a syringe fillable with the substance and in fluid communication with a distal end of said first elastic needle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A method for injecting a substance into an intervertebral disc, the method comprising the steps of:
-
(a) inserting a needle of an injection device into a vertebrae;
(b) moving a distal portion of the needle out from a distal portion of a sheath surrounding the needle, thereby allowing the needle to resume a curved configuration;
(c) puncturing through an endplate and into the intervertebral disc with the needle;
(d) actuating the injection device to inject the substance into the intervertebral disc;
(e) and removing said needle from the vertebrae. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
-
Specification